19888875

素因数分解:

$3^3\times 5^3\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:178

約数の個数: 64

約数和(自身を含む): 37739520

約数和(自身を除く): 17850645

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 71, 75, 83, 125, 135, 213, 225, 249, 355, 375, 415, 639, 675, 747, 1065, 1125, 1245, 1775, 1917, 2075, 2241, 3195, 3375, 3735, 5325, 5893, 6225, 8875, 9585, 10375, 11205, 15975, 17679, 18675, 26625, 29465, 31125, 47925, 53037, 56025, 79875, 88395, 93375, 147325, 159111, 239625, 265185, 280125, 441975, 736625, 795555, 1325925, 2209875, 3977775, 6629625, 19888875]

約数ペア:

[(1, 19888875), (3, 6629625), (5, 3977775), (9, 2209875), (15, 1325925), (25, 795555), (27, 736625), (45, 441975), (71, 280125), (75, 265185), (83, 239625), (125, 159111), (135, 147325), (213, 93375), (225, 88395), (249, 79875), (355, 56025), (375, 53037), (415, 47925), (639, 31125), (675, 29465), (747, 26625), (1065, 18675), (1125, 17679), (1245, 15975), (1775, 11205), (1917, 10375), (2075, 9585), (2241, 8875), (3195, 6225), (3375, 5893), (3735, 5325)]