21588280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77101}}^1$

素因数の和:77119

約数の個数: 32

約数和(自身を含む): 55513440

約数和(自身を除く): 33925160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77101, 154202, 308404, 385505, 539707, 616808, 771010, 1079414, 1542020, 2158828, 2698535, 3084040, 4317656, 5397070, 10794140, 21588280]

約数ペア:

[(1, 21588280), (2, 10794140), (4, 5397070), (5, 4317656), (7, 3084040), (8, 2698535), (10, 2158828), (14, 1542020), (20, 1079414), (28, 771010), (35, 616808), (40, 539707), (56, 385505), (70, 308404), (140, 154202), (280, 77101)]