668836240

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{39623}}^1$

素因数の和:39847

約数の個数: 40

約数和(自身を含む): 1562453568

約数和(自身を除く): 893617328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 844, 1055, 1688, 2110, 3376, 4220, 8440, 16880, 39623, 79246, 158492, 198115, 316984, 396230, 633968, 792460, 1584920, 3169840, 8360453, 16720906, 33441812, 41802265, 66883624, 83604530, 133767248, 167209060, 334418120, 668836240]

約数ペア:

[(1, 668836240), (2, 334418120), (4, 167209060), (5, 133767248), (8, 83604530), (10, 66883624), (16, 41802265), (20, 33441812), (40, 16720906), (80, 8360453), (211, 3169840), (422, 1584920), (844, 792460), (1055, 633968), (1688, 396230), (2110, 316984), (3376, 198115), (4220, 158492), (8440, 79246), (16880, 39623)]