20258180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{599}}^1$

素因数の和:716

約数の個数: 48

約数和(自身を含む): 45360000

約数和(自身を除く): 25101820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 380, 445, 599, 890, 1198, 1691, 1780, 2396, 2995, 3382, 5990, 6764, 8455, 11381, 11980, 16910, 22762, 33820, 45524, 53311, 56905, 106622, 113810, 213244, 227620, 266555, 533110, 1012909, 1066220, 2025818, 4051636, 5064545, 10129090, 20258180]

約数ペア:

[(1, 20258180), (2, 10129090), (4, 5064545), (5, 4051636), (10, 2025818), (19, 1066220), (20, 1012909), (38, 533110), (76, 266555), (89, 227620), (95, 213244), (178, 113810), (190, 106622), (356, 56905), (380, 53311), (445, 45524), (599, 33820), (890, 22762), (1198, 16910), (1691, 11980), (1780, 11381), (2396, 8455), (2995, 6764), (3382, 5990)]