18278375

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:188

約数の個数: 32

約数和(自身を含む): 24261120

約数和(自身を除く): 5982745

約数列:

[1, 5, 25, 31, 53, 89, 125, 155, 265, 445, 775, 1325, 1643, 2225, 2759, 3875, 4717, 6625, 8215, 11125, 13795, 23585, 41075, 68975, 117925, 146227, 205375, 344875, 589625, 731135, 3655675, 18278375]

約数ペア:

[(1, 18278375), (5, 3655675), (25, 731135), (31, 589625), (53, 344875), (89, 205375), (125, 146227), (155, 117925), (265, 68975), (445, 41075), (775, 23585), (1325, 13795), (1643, 11125), (2225, 8215), (2759, 6625), (3875, 4717)]