639341710

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{186397}}^1$

素因数の和:186425

約数の個数: 32

約数和(自身を含む): 1342065600

約数和(自身を除く): 702723890

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 186397, 372794, 931985, 1304779, 1863970, 2609558, 6523895, 9133453, 13047790, 18266906, 45667265, 63934171, 91334530, 127868342, 319670855, 639341710]

約数ペア:

[(1, 639341710), (2, 319670855), (5, 127868342), (7, 91334530), (10, 63934171), (14, 45667265), (35, 18266906), (49, 13047790), (70, 9133453), (98, 6523895), (245, 2609558), (343, 1863970), (490, 1304779), (686, 931985), (1715, 372794), (3430, 186397)]