21741720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1$

素因数の和:226

約数の個数: 256

約数和(自身を含む): 88058880

約数和(自身を除く): 66317160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 20, 21, 22, 24, 26, 28, 30, 33, 35, 39, 40, 42, 44, 52, 55, 56, 60, 65, 66, 70, 77, 78, 84, 88, 91, 104, 105, 110, 120, 130, 132, 140, 143, 154, 156, 165, 168, 181, 182, 195, 210, 220, 231, 260, 264, 273, 280, 286, 308, 312, 330, 362, 364, 385, 390, 420, 429, 440, 455, 462, 520, 543, 546, 572, 616, 660, 715, 724, 728, 770, 780, 840, 858, 905, 910, 924, 1001, 1086, 1092, 1144, 1155, 1267, 1320, 1365, 1430, 1448, 1540, 1560, 1716, 1810, 1820, 1848, 1991, 2002, 2145, 2172, 2184, 2310, 2353, 2534, 2715, 2730, 2860, 3003, 3080, 3432, 3620, 3640, 3801, 3982, 4004, 4290, 4344, 4620, 4706, 5005, 5068, 5430, 5460, 5720, 5973, 6006, 6335, 7059, 7240, 7602, 7964, 8008, 8580, 9240, 9412, 9955, 10010, 10136, 10860, 10920, 11765, 11946, 12012, 12670, 13937, 14118, 15015, 15204, 15928, 16471, 17160, 18824, 19005, 19910, 20020, 21720, 23530, 23892, 24024, 25340, 25883, 27874, 28236, 29865, 30030, 30408, 32942, 35295, 38010, 39820, 40040, 41811, 47060, 47784, 49413, 50680, 51766, 55748, 56472, 59730, 60060, 65884, 69685, 70590, 76020, 77649, 79640, 82355, 83622, 94120, 98826, 103532, 111496, 119460, 120120, 129415, 131768, 139370, 141180, 152040, 155298, 164710, 167244, 181181, 197652, 207064, 209055, 238920, 247065, 258830, 278740, 282360, 310596, 329420, 334488, 362362, 388245, 395304, 418110, 494130, 517660, 543543, 557480, 621192, 658840, 724724, 776490, 836220, 905905, 988260, 1035320, 1087086, 1449448, 1552980, 1672440, 1811810, 1976520, 2174172, 2717715, 3105960, 3623620, 4348344, 5435430, 7247240, 10870860, 21741720]

約数ペア:

[(1, 21741720), (2, 10870860), (3, 7247240), (4, 5435430), (5, 4348344), (6, 3623620), (7, 3105960), (8, 2717715), (10, 2174172), (11, 1976520), (12, 1811810), (13, 1672440), (14, 1552980), (15, 1449448), (20, 1087086), (21, 1035320), (22, 988260), (24, 905905), (26, 836220), (28, 776490), (30, 724724), (33, 658840), (35, 621192), (39, 557480), (40, 543543), (42, 517660), (44, 494130), (52, 418110), (55, 395304), (56, 388245), (60, 362362), (65, 334488), (66, 329420), (70, 310596), (77, 282360), (78, 278740), (84, 258830), (88, 247065), (91, 238920), (104, 209055), (105, 207064), (110, 197652), (120, 181181), (130, 167244), (132, 164710), (140, 155298), (143, 152040), (154, 141180), (156, 139370), (165, 131768), (168, 129415), (181, 120120), (182, 119460), (195, 111496), (210, 103532), (220, 98826), (231, 94120), (260, 83622), (264, 82355), (273, 79640), (280, 77649), (286, 76020), (308, 70590), (312, 69685), (330, 65884), (362, 60060), (364, 59730), (385, 56472), (390, 55748), (420, 51766), (429, 50680), (440, 49413), (455, 47784), (462, 47060), (520, 41811), (543, 40040), (546, 39820), (572, 38010), (616, 35295), (660, 32942), (715, 30408), (724, 30030), (728, 29865), (770, 28236), (780, 27874), (840, 25883), (858, 25340), (905, 24024), (910, 23892), (924, 23530), (1001, 21720), (1086, 20020), (1092, 19910), (1144, 19005), (1155, 18824), (1267, 17160), (1320, 16471), (1365, 15928), (1430, 15204), (1448, 15015), (1540, 14118), (1560, 13937), (1716, 12670), (1810, 12012), (1820, 11946), (1848, 11765), (1991, 10920), (2002, 10860), (2145, 10136), (2172, 10010), (2184, 9955), (2310, 9412), (2353, 9240), (2534, 8580), (2715, 8008), (2730, 7964), (2860, 7602), (3003, 7240), (3080, 7059), (3432, 6335), (3620, 6006), (3640, 5973), (3801, 5720), (3982, 5460), (4004, 5430), (4290, 5068), (4344, 5005), (4620, 4706)]