21677460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51613}}^1$

素因数の和:51632

約数の個数: 48

約数和(自身を含む): 69369216

約数和(自身を除く): 47691756

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, 420, 51613, 103226, 154839, 206452, 258065, 309678, 361291, 516130, 619356, 722582, 774195, 1032260, 1083873, 1445164, 1548390, 1806455, 2167746, 3096780, 3612910, 4335492, 5419365, 7225820, 10838730, 21677460]

約数ペア:

[(1, 21677460), (2, 10838730), (3, 7225820), (4, 5419365), (5, 4335492), (6, 3612910), (7, 3096780), (10, 2167746), (12, 1806455), (14, 1548390), (15, 1445164), (20, 1083873), (21, 1032260), (28, 774195), (30, 722582), (35, 619356), (42, 516130), (60, 361291), (70, 309678), (84, 258065), (105, 206452), (140, 154839), (210, 103226), (420, 51613)]