21753746

素因数分解:

$2^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{1669}}^1$

素因数の和:1711

約数の個数: 32

約数和(自身を含む): 40080000

約数和(自身を除く): 18326254

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 343, 686, 931, 1669, 1862, 3338, 6517, 11683, 13034, 23366, 31711, 63422, 81781, 163562, 221977, 443954, 572467, 1144934, 1553839, 3107678, 10876873, 21753746]

約数ペア:

[(1, 21753746), (2, 10876873), (7, 3107678), (14, 1553839), (19, 1144934), (38, 572467), (49, 443954), (98, 221977), (133, 163562), (266, 81781), (343, 63422), (686, 31711), (931, 23366), (1669, 13034), (1862, 11683), (3338, 6517)]