20176425

素因数分解:

$3^3\times 5^2\times {\mathrm{71}}^1\times {\mathrm{421}}^1$

素因数の和:511

約数の個数: 48

約数和(自身を含む): 37676160

約数和(自身を除く): 17499735

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 71, 75, 135, 213, 225, 355, 421, 639, 675, 1065, 1263, 1775, 1917, 2105, 3195, 3789, 5325, 6315, 9585, 10525, 11367, 15975, 18945, 29891, 31575, 47925, 56835, 89673, 94725, 149455, 269019, 284175, 448365, 747275, 807057, 1345095, 2241825, 4035285, 6725475, 20176425]

約数ペア:

[(1, 20176425), (3, 6725475), (5, 4035285), (9, 2241825), (15, 1345095), (25, 807057), (27, 747275), (45, 448365), (71, 284175), (75, 269019), (135, 149455), (213, 94725), (225, 89673), (355, 56835), (421, 47925), (639, 31575), (675, 29891), (1065, 18945), (1263, 15975), (1775, 11367), (1917, 10525), (2105, 9585), (3195, 6315), (3789, 5325)]