399375

素因数分解:

$3^2\times 5^4\times {\mathrm{71}}^1$

素因数の和:97

約数の個数: 30

約数和(自身を含む): 731016

約数和(自身を除く): 331641

約数列:

[1, 3, 5, 9, 15, 25, 45, 71, 75, 125, 213, 225, 355, 375, 625, 639, 1065, 1125, 1775, 1875, 3195, 5325, 5625, 8875, 15975, 26625, 44375, 79875, 133125, 399375]

約数ペア:

[(1, 399375), (3, 133125), (5, 79875), (9, 44375), (15, 26625), (25, 15975), (45, 8875), (71, 5625), (75, 5325), (125, 3195), (213, 1875), (225, 1775), (355, 1125), (375, 1065), (625, 639)]