21053760

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1$

素因数の和:281

約数の個数: 224

約数和(自身を含む): 82612992

約数和(自身を除く): 61559232

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 32, 35, 39, 40, 42, 48, 52, 56, 60, 64, 65, 70, 78, 80, 84, 91, 96, 104, 105, 112, 120, 130, 140, 156, 160, 168, 182, 192, 195, 208, 210, 224, 240, 241, 260, 273, 280, 312, 320, 336, 364, 390, 416, 420, 448, 455, 480, 482, 520, 546, 560, 624, 672, 723, 728, 780, 832, 840, 910, 960, 964, 1040, 1092, 1120, 1205, 1248, 1344, 1365, 1446, 1456, 1560, 1680, 1687, 1820, 1928, 2080, 2184, 2240, 2410, 2496, 2730, 2892, 2912, 3120, 3133, 3360, 3374, 3615, 3640, 3856, 4160, 4368, 4820, 5061, 5460, 5784, 5824, 6240, 6266, 6720, 6748, 7230, 7280, 7712, 8435, 8736, 9399, 9640, 10122, 10920, 11568, 12480, 12532, 13496, 14460, 14560, 15424, 15665, 16870, 17472, 18798, 19280, 20244, 21840, 21931, 23136, 25064, 25305, 26992, 28920, 29120, 31330, 33740, 37596, 38560, 40488, 43680, 43862, 46272, 46995, 50128, 50610, 53984, 57840, 62660, 65793, 67480, 75192, 77120, 80976, 87360, 87724, 93990, 100256, 101220, 107968, 109655, 115680, 125320, 131586, 134960, 150384, 161952, 175448, 187980, 200512, 202440, 219310, 231360, 250640, 263172, 269920, 300768, 323904, 328965, 350896, 375960, 404880, 438620, 501280, 526344, 539840, 601536, 657930, 701792, 751920, 809760, 877240, 1002560, 1052688, 1315860, 1403584, 1503840, 1619520, 1754480, 2105376, 2631720, 3007680, 3508960, 4210752, 5263440, 7017920, 10526880, 21053760]

約数ペア:

[(1, 21053760), (2, 10526880), (3, 7017920), (4, 5263440), (5, 4210752), (6, 3508960), (7, 3007680), (8, 2631720), (10, 2105376), (12, 1754480), (13, 1619520), (14, 1503840), (15, 1403584), (16, 1315860), (20, 1052688), (21, 1002560), (24, 877240), (26, 809760), (28, 751920), (30, 701792), (32, 657930), (35, 601536), (39, 539840), (40, 526344), (42, 501280), (48, 438620), (52, 404880), (56, 375960), (60, 350896), (64, 328965), (65, 323904), (70, 300768), (78, 269920), (80, 263172), (84, 250640), (91, 231360), (96, 219310), (104, 202440), (105, 200512), (112, 187980), (120, 175448), (130, 161952), (140, 150384), (156, 134960), (160, 131586), (168, 125320), (182, 115680), (192, 109655), (195, 107968), (208, 101220), (210, 100256), (224, 93990), (240, 87724), (241, 87360), (260, 80976), (273, 77120), (280, 75192), (312, 67480), (320, 65793), (336, 62660), (364, 57840), (390, 53984), (416, 50610), (420, 50128), (448, 46995), (455, 46272), (480, 43862), (482, 43680), (520, 40488), (546, 38560), (560, 37596), (624, 33740), (672, 31330), (723, 29120), (728, 28920), (780, 26992), (832, 25305), (840, 25064), (910, 23136), (960, 21931), (964, 21840), (1040, 20244), (1092, 19280), (1120, 18798), (1205, 17472), (1248, 16870), (1344, 15665), (1365, 15424), (1446, 14560), (1456, 14460), (1560, 13496), (1680, 12532), (1687, 12480), (1820, 11568), (1928, 10920), (2080, 10122), (2184, 9640), (2240, 9399), (2410, 8736), (2496, 8435), (2730, 7712), (2892, 7280), (2912, 7230), (3120, 6748), (3133, 6720), (3360, 6266), (3374, 6240), (3615, 5824), (3640, 5784), (3856, 5460), (4160, 5061), (4368, 4820)]