21390152

素因数分解:

$2^3\times 7^1\times {\mathrm{67}}^1\times {\mathrm{5701}}^1$

素因数の和:5781

約数の個数: 32

約数和(自身を含む): 46528320

約数和(自身を除く): 25138168

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 67, 134, 268, 469, 536, 938, 1876, 3752, 5701, 11402, 22804, 39907, 45608, 79814, 159628, 319256, 381967, 763934, 1527868, 2673769, 3055736, 5347538, 10695076, 21390152]

約数ペア:

[(1, 21390152), (2, 10695076), (4, 5347538), (7, 3055736), (8, 2673769), (14, 1527868), (28, 763934), (56, 381967), (67, 319256), (134, 159628), (268, 79814), (469, 45608), (536, 39907), (938, 22804), (1876, 11402), (3752, 5701)]