21727678

素因数分解:

$2^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{1667}}^1$

素因数の和:1709

約数の個数: 32

約数和(自身を含む): 40032000

約数和(自身を除く): 18304322

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 343, 686, 931, 1667, 1862, 3334, 6517, 11669, 13034, 23338, 31673, 63346, 81683, 163366, 221711, 443422, 571781, 1143562, 1551977, 3103954, 10863839, 21727678]

約数ペア:

[(1, 21727678), (2, 10863839), (7, 3103954), (14, 1551977), (19, 1143562), (38, 571781), (49, 443422), (98, 221711), (133, 163366), (266, 81683), (343, 63346), (686, 31673), (931, 23338), (1667, 13034), (1862, 11669), (3334, 6517)]