20259740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{797}}^1$

素因数の和:878

約数の個数: 48

約数和(自身を含む): 45045504

約数和(自身を除く): 24785764

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 797, 820, 1271, 1594, 2542, 3188, 3985, 5084, 6355, 7970, 12710, 15940, 24707, 25420, 32677, 49414, 65354, 98828, 123535, 130708, 163385, 247070, 326770, 494140, 653540, 1012987, 2025974, 4051948, 5064935, 10129870, 20259740]

約数ペア:

[(1, 20259740), (2, 10129870), (4, 5064935), (5, 4051948), (10, 2025974), (20, 1012987), (31, 653540), (41, 494140), (62, 326770), (82, 247070), (124, 163385), (155, 130708), (164, 123535), (205, 98828), (310, 65354), (410, 49414), (620, 32677), (797, 25420), (820, 24707), (1271, 15940), (1594, 12710), (2542, 7970), (3188, 6355), (3985, 5084)]