257531820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{467}}^1$

素因数の和:600

約数の個数: 192

約数和(自身を含む): 898200576

約数和(自身を除く): 640668756

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 101, 105, 130, 140, 156, 182, 195, 202, 210, 260, 273, 303, 364, 390, 404, 420, 455, 467, 505, 546, 606, 707, 780, 910, 934, 1010, 1092, 1212, 1313, 1365, 1401, 1414, 1515, 1820, 1868, 2020, 2121, 2335, 2626, 2730, 2802, 2828, 3030, 3269, 3535, 3939, 4242, 4670, 5252, 5460, 5604, 6060, 6071, 6538, 6565, 7005, 7070, 7878, 8484, 9191, 9340, 9807, 10605, 12142, 13076, 13130, 14010, 14140, 15756, 16345, 18213, 18382, 19614, 19695, 21210, 24284, 26260, 27573, 28020, 30355, 32690, 36426, 36764, 39228, 39390, 42420, 42497, 45955, 47167, 49035, 55146, 60710, 65380, 72852, 78780, 84994, 91065, 91910, 94334, 98070, 110292, 121420, 127491, 137865, 141501, 169988, 182130, 183820, 188668, 196140, 212485, 235835, 254982, 275730, 283002, 330169, 364260, 424970, 471670, 509964, 551460, 566004, 613171, 637455, 660338, 707505, 849940, 943340, 990507, 1226342, 1274910, 1320676, 1415010, 1650845, 1839513, 1981014, 2452684, 2549820, 2830020, 3065855, 3301690, 3679026, 3962028, 4292197, 4952535, 6131710, 6603380, 7358052, 8584394, 9197565, 9905070, 12263420, 12876591, 17168788, 18395130, 19810140, 21460985, 25753182, 36790260, 42921970, 51506364, 64382955, 85843940, 128765910, 257531820]

約数ペア:

[(1, 257531820), (2, 128765910), (3, 85843940), (4, 64382955), (5, 51506364), (6, 42921970), (7, 36790260), (10, 25753182), (12, 21460985), (13, 19810140), (14, 18395130), (15, 17168788), (20, 12876591), (21, 12263420), (26, 9905070), (28, 9197565), (30, 8584394), (35, 7358052), (39, 6603380), (42, 6131710), (52, 4952535), (60, 4292197), (65, 3962028), (70, 3679026), (78, 3301690), (84, 3065855), (91, 2830020), (101, 2549820), (105, 2452684), (130, 1981014), (140, 1839513), (156, 1650845), (182, 1415010), (195, 1320676), (202, 1274910), (210, 1226342), (260, 990507), (273, 943340), (303, 849940), (364, 707505), (390, 660338), (404, 637455), (420, 613171), (455, 566004), (467, 551460), (505, 509964), (546, 471670), (606, 424970), (707, 364260), (780, 330169), (910, 283002), (934, 275730), (1010, 254982), (1092, 235835), (1212, 212485), (1313, 196140), (1365, 188668), (1401, 183820), (1414, 182130), (1515, 169988), (1820, 141501), (1868, 137865), (2020, 127491), (2121, 121420), (2335, 110292), (2626, 98070), (2730, 94334), (2802, 91910), (2828, 91065), (3030, 84994), (3269, 78780), (3535, 72852), (3939, 65380), (4242, 60710), (4670, 55146), (5252, 49035), (5460, 47167), (5604, 45955), (6060, 42497), (6071, 42420), (6538, 39390), (6565, 39228), (7005, 36764), (7070, 36426), (7878, 32690), (8484, 30355), (9191, 28020), (9340, 27573), (9807, 26260), (10605, 24284), (12142, 21210), (13076, 19695), (13130, 19614), (14010, 18382), (14140, 18213), (15756, 16345)]