20781746580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{677813}}^1$

素因数の和:677905

約数の個数: 96

約数和(自身を含む): 67412669184

約数和(自身を除く): 46630922604

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 73, 84, 105, 140, 146, 210, 219, 292, 365, 420, 438, 511, 730, 876, 1022, 1095, 1460, 1533, 2044, 2190, 2555, 3066, 4380, 5110, 6132, 7665, 10220, 15330, 30660, 677813, 1355626, 2033439, 2711252, 3389065, 4066878, 4744691, 6778130, 8133756, 9489382, 10167195, 13556260, 14234073, 18978764, 20334390, 23723455, 28468146, 40668780, 47446910, 49480349, 56936292, 71170365, 94893820, 98960698, 142340730, 148441047, 197921396, 247401745, 284681460, 296882094, 346362443, 494803490, 593764188, 692724886, 742205235, 989606980, 1039087329, 1385449772, 1484410470, 1731812215, 2078174658, 2968820940, 3463624430, 4156349316, 5195436645, 6927248860, 10390873290, 20781746580]

約数ペア:

[(1, 20781746580), (2, 10390873290), (3, 6927248860), (4, 5195436645), (5, 4156349316), (6, 3463624430), (7, 2968820940), (10, 2078174658), (12, 1731812215), (14, 1484410470), (15, 1385449772), (20, 1039087329), (21, 989606980), (28, 742205235), (30, 692724886), (35, 593764188), (42, 494803490), (60, 346362443), (70, 296882094), (73, 284681460), (84, 247401745), (105, 197921396), (140, 148441047), (146, 142340730), (210, 98960698), (219, 94893820), (292, 71170365), (365, 56936292), (420, 49480349), (438, 47446910), (511, 40668780), (730, 28468146), (876, 23723455), (1022, 20334390), (1095, 18978764), (1460, 14234073), (1533, 13556260), (2044, 10167195), (2190, 9489382), (2555, 8133756), (3066, 6778130), (4380, 4744691), (5110, 4066878), (6132, 3389065), (7665, 2711252), (10220, 2033439), (15330, 1355626), (30660, 677813)]