21561540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1$

素因数の和:402

約数の個数: 192

約数和(自身を含む): 81285120

約数和(自身を除く): 59723580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 15, 20, 21, 22, 26, 28, 30, 33, 35, 39, 42, 44, 52, 55, 60, 65, 66, 70, 77, 78, 84, 91, 105, 110, 130, 132, 140, 143, 154, 156, 165, 182, 195, 210, 220, 231, 260, 273, 286, 308, 330, 359, 364, 385, 390, 420, 429, 455, 462, 546, 572, 660, 715, 718, 770, 780, 858, 910, 924, 1001, 1077, 1092, 1155, 1365, 1430, 1436, 1540, 1716, 1795, 1820, 2002, 2145, 2154, 2310, 2513, 2730, 2860, 3003, 3590, 3949, 4004, 4290, 4308, 4620, 4667, 5005, 5026, 5385, 5460, 6006, 7180, 7539, 7898, 8580, 9334, 10010, 10052, 10770, 11847, 12012, 12565, 14001, 15015, 15078, 15796, 18668, 19745, 20020, 21540, 23335, 23694, 25130, 27643, 28002, 30030, 30156, 32669, 37695, 39490, 46670, 47388, 50260, 51337, 55286, 56004, 59235, 60060, 65338, 70005, 75390, 78980, 82929, 93340, 98007, 102674, 110572, 118470, 130676, 138215, 140010, 150780, 154011, 163345, 165858, 196014, 205348, 236940, 256685, 276430, 280020, 308022, 326690, 331716, 359359, 392028, 414645, 490035, 513370, 552860, 616044, 653380, 718718, 770055, 829290, 980070, 1026740, 1078077, 1437436, 1540110, 1658580, 1796795, 1960140, 2156154, 3080220, 3593590, 4312308, 5390385, 7187180, 10780770, 21561540]

約数ペア:

[(1, 21561540), (2, 10780770), (3, 7187180), (4, 5390385), (5, 4312308), (6, 3593590), (7, 3080220), (10, 2156154), (11, 1960140), (12, 1796795), (13, 1658580), (14, 1540110), (15, 1437436), (20, 1078077), (21, 1026740), (22, 980070), (26, 829290), (28, 770055), (30, 718718), (33, 653380), (35, 616044), (39, 552860), (42, 513370), (44, 490035), (52, 414645), (55, 392028), (60, 359359), (65, 331716), (66, 326690), (70, 308022), (77, 280020), (78, 276430), (84, 256685), (91, 236940), (105, 205348), (110, 196014), (130, 165858), (132, 163345), (140, 154011), (143, 150780), (154, 140010), (156, 138215), (165, 130676), (182, 118470), (195, 110572), (210, 102674), (220, 98007), (231, 93340), (260, 82929), (273, 78980), (286, 75390), (308, 70005), (330, 65338), (359, 60060), (364, 59235), (385, 56004), (390, 55286), (420, 51337), (429, 50260), (455, 47388), (462, 46670), (546, 39490), (572, 37695), (660, 32669), (715, 30156), (718, 30030), (770, 28002), (780, 27643), (858, 25130), (910, 23694), (924, 23335), (1001, 21540), (1077, 20020), (1092, 19745), (1155, 18668), (1365, 15796), (1430, 15078), (1436, 15015), (1540, 14001), (1716, 12565), (1795, 12012), (1820, 11847), (2002, 10770), (2145, 10052), (2154, 10010), (2310, 9334), (2513, 8580), (2730, 7898), (2860, 7539), (3003, 7180), (3590, 6006), (3949, 5460), (4004, 5385), (4290, 5026), (4308, 5005), (4620, 4667)]