20781689460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{156089}}^1$

素因数の和:156425

約数の個数: 96

約数和(自身を含む): 66711617280

約数和(自身を除く): 45929927820

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 317, 420, 634, 951, 1268, 1585, 1902, 2219, 3170, 3804, 4438, 4755, 6340, 6657, 8876, 9510, 11095, 13314, 19020, 22190, 26628, 33285, 44380, 66570, 133140, 156089, 312178, 468267, 624356, 780445, 936534, 1092623, 1560890, 1873068, 2185246, 2341335, 3121780, 3277869, 4370492, 4682670, 5463115, 6555738, 9365340, 10926230, 13111476, 16389345, 21852460, 32778690, 49480213, 65557380, 98960426, 148440639, 197920852, 247401065, 296881278, 346361491, 494802130, 593762556, 692722982, 742203195, 989604260, 1039084473, 1385445964, 1484406390, 1731807455, 2078168946, 2968812780, 3463614910, 4156337892, 5195422365, 6927229820, 10390844730, 20781689460]

約数ペア:

[(1, 20781689460), (2, 10390844730), (3, 6927229820), (4, 5195422365), (5, 4156337892), (6, 3463614910), (7, 2968812780), (10, 2078168946), (12, 1731807455), (14, 1484406390), (15, 1385445964), (20, 1039084473), (21, 989604260), (28, 742203195), (30, 692722982), (35, 593762556), (42, 494802130), (60, 346361491), (70, 296881278), (84, 247401065), (105, 197920852), (140, 148440639), (210, 98960426), (317, 65557380), (420, 49480213), (634, 32778690), (951, 21852460), (1268, 16389345), (1585, 13111476), (1902, 10926230), (2219, 9365340), (3170, 6555738), (3804, 5463115), (4438, 4682670), (4755, 4370492), (6340, 3277869), (6657, 3121780), (8876, 2341335), (9510, 2185246), (11095, 1873068), (13314, 1560890), (19020, 1092623), (22190, 936534), (26628, 780445), (33285, 624356), (44380, 468267), (66570, 312178), (133140, 156089)]