31071375

素因数分解:

$3^2\times 5^3\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:481

約数の個数: 48

約数和(自身を含む): 56946240

約数和(自身を除く): 25874865

約数列:

[1, 3, 5, 9, 15, 25, 45, 71, 75, 125, 213, 225, 355, 375, 389, 639, 1065, 1125, 1167, 1775, 1945, 3195, 3501, 5325, 5835, 8875, 9725, 15975, 17505, 26625, 27619, 29175, 48625, 79875, 82857, 87525, 138095, 145875, 248571, 414285, 437625, 690475, 1242855, 2071425, 3452375, 6214275, 10357125, 31071375]

約数ペア:

[(1, 31071375), (3, 10357125), (5, 6214275), (9, 3452375), (15, 2071425), (25, 1242855), (45, 690475), (71, 437625), (75, 414285), (125, 248571), (213, 145875), (225, 138095), (355, 87525), (375, 82857), (389, 79875), (639, 48625), (1065, 29175), (1125, 27619), (1167, 26625), (1775, 17505), (1945, 15975), (3195, 9725), (3501, 8875), (5325, 5835)]