21050260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13669}}^1$

素因数の和:13696

約数の個数: 48

約数和(自身を含む): 55117440

約数和(自身を除く): 34067180

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13669, 27338, 54676, 68345, 95683, 136690, 150359, 191366, 273380, 300718, 382732, 478415, 601436, 751795, 956830, 1052513, 1503590, 1913660, 2105026, 3007180, 4210052, 5262565, 10525130, 21050260]

約数ペア:

[(1, 21050260), (2, 10525130), (4, 5262565), (5, 4210052), (7, 3007180), (10, 2105026), (11, 1913660), (14, 1503590), (20, 1052513), (22, 956830), (28, 751795), (35, 601436), (44, 478415), (55, 382732), (70, 300718), (77, 273380), (110, 191366), (140, 150359), (154, 136690), (220, 95683), (308, 68345), (385, 54676), (770, 27338), (1540, 13669)]