156980375

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{421}}^1$

素因数の和:612

約数の個数: 32

約数和(自身を含む): 208029120

約数和(自身を除く): 51048745

約数列:

[1, 5, 19, 25, 95, 125, 157, 421, 475, 785, 2105, 2375, 2983, 3925, 7999, 10525, 14915, 19625, 39995, 52625, 66097, 74575, 199975, 330485, 372875, 999875, 1255843, 1652425, 6279215, 8262125, 31396075, 156980375]

約数ペア:

[(1, 156980375), (5, 31396075), (19, 8262125), (25, 6279215), (95, 1652425), (125, 1255843), (157, 999875), (421, 372875), (475, 330485), (785, 199975), (2105, 74575), (2375, 66097), (2983, 52625), (3925, 39995), (7999, 19625), (10525, 14915)]