20121581620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{293}}^1\times {\mathrm{3529}}^1$

素因数の和:3977

約数の個数: 96

約数和(自身を含む): 48819052800

約数和(自身を除く): 28697471180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 293, 556, 586, 695, 973, 1172, 1390, 1465, 1946, 2051, 2780, 2930, 3529, 3892, 4102, 4865, 5860, 7058, 8204, 9730, 10255, 14116, 17645, 19460, 20510, 24703, 35290, 40727, 41020, 49406, 70580, 81454, 98812, 123515, 162908, 203635, 247030, 285089, 407270, 490531, 494060, 570178, 814540, 981062, 1033997, 1140356, 1425445, 1962124, 2067994, 2452655, 2850890, 3433717, 4135988, 4905310, 5169985, 5701780, 6867434, 7237979, 9810620, 10339970, 13734868, 14475958, 17168585, 20679940, 28951916, 34337170, 36189895, 68674340, 72379790, 143725583, 144759580, 287451166, 574902332, 718627915, 1006079081, 1437255830, 2012158162, 2874511660, 4024316324, 5030395405, 10060790810, 20121581620]

約数ペア:

[(1, 20121581620), (2, 10060790810), (4, 5030395405), (5, 4024316324), (7, 2874511660), (10, 2012158162), (14, 1437255830), (20, 1006079081), (28, 718627915), (35, 574902332), (70, 287451166), (139, 144759580), (140, 143725583), (278, 72379790), (293, 68674340), (556, 36189895), (586, 34337170), (695, 28951916), (973, 20679940), (1172, 17168585), (1390, 14475958), (1465, 13734868), (1946, 10339970), (2051, 9810620), (2780, 7237979), (2930, 6867434), (3529, 5701780), (3892, 5169985), (4102, 4905310), (4865, 4135988), (5860, 3433717), (7058, 2850890), (8204, 2452655), (9730, 2067994), (10255, 1962124), (14116, 1425445), (17645, 1140356), (19460, 1033997), (20510, 981062), (24703, 814540), (35290, 570178), (40727, 494060), (41020, 490531), (49406, 407270), (70580, 285089), (81454, 247030), (98812, 203635), (123515, 162908)]