638591710

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{78163}}^1$

素因数の和:78232

約数の個数: 32

約数和(自身を含む): 1238117760

約数和(自身を除く): 599526050

約数列:

[1, 2, 5, 10, 19, 38, 43, 86, 95, 190, 215, 430, 817, 1634, 4085, 8170, 78163, 156326, 390815, 781630, 1485097, 2970194, 3361009, 6722018, 7425485, 14850970, 16805045, 33610090, 63859171, 127718342, 319295855, 638591710]

約数ペア:

[(1, 638591710), (2, 319295855), (5, 127718342), (10, 63859171), (19, 33610090), (38, 16805045), (43, 14850970), (86, 7425485), (95, 6722018), (190, 3361009), (215, 2970194), (430, 1485097), (817, 781630), (1634, 390815), (4085, 156326), (8170, 78163)]