20966218

素因数分解:

$2^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{2351}}^1$

素因数の和:2387

約数の個数: 32

約数和(自身を含む): 39513600

約数和(自身を除く): 18547382

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 182, 343, 637, 686, 1274, 2351, 4459, 4702, 8918, 16457, 30563, 32914, 61126, 115199, 213941, 230398, 427882, 806393, 1497587, 1612786, 2995174, 10483109, 20966218]

約数ペア:

[(1, 20966218), (2, 10483109), (7, 2995174), (13, 1612786), (14, 1497587), (26, 806393), (49, 427882), (91, 230398), (98, 213941), (182, 115199), (343, 61126), (637, 32914), (686, 30563), (1274, 16457), (2351, 8918), (4459, 4702)]