21756490

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{6343}}^1$

素因数の和:6371

約数の個数: 32

約数和(自身を含む): 45676800

約数和(自身を除く): 23920310

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 6343, 12686, 31715, 44401, 63430, 88802, 222005, 310807, 444010, 621614, 1554035, 2175649, 3108070, 4351298, 10878245, 21756490]

約数ペア:

[(1, 21756490), (2, 10878245), (5, 4351298), (7, 3108070), (10, 2175649), (14, 1554035), (35, 621614), (49, 444010), (70, 310807), (98, 222005), (245, 88802), (343, 63430), (490, 44401), (686, 31715), (1715, 12686), (3430, 6343)]