21128568

素因数分解:

$2^3\times 3^1\times {\mathrm{47}}^1\times {\mathrm{18731}}^1$

素因数の和:18787

約数の個数: 32

約数和(自身を含む): 53948160

約数和(自身を除く): 32819592

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 47, 94, 141, 188, 282, 376, 564, 1128, 18731, 37462, 56193, 74924, 112386, 149848, 224772, 449544, 880357, 1760714, 2641071, 3521428, 5282142, 7042856, 10564284, 21128568]

約数ペア:

[(1, 21128568), (2, 10564284), (3, 7042856), (4, 5282142), (6, 3521428), (8, 2641071), (12, 1760714), (24, 880357), (47, 449544), (94, 224772), (141, 149848), (188, 112386), (282, 74924), (376, 56193), (564, 37462), (1128, 18731)]