21273375

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:153

約数の個数: 64

約数和(自身を含む): 38817792

約数和(自身を除く): 17544417

約数列:

[1, 3, 5, 15, 17, 25, 47, 51, 71, 75, 85, 125, 141, 213, 235, 255, 355, 375, 425, 705, 799, 1065, 1175, 1207, 1275, 1775, 2125, 2397, 3337, 3525, 3621, 3995, 5325, 5875, 6035, 6375, 8875, 10011, 11985, 16685, 17625, 18105, 19975, 26625, 30175, 50055, 56729, 59925, 83425, 90525, 99875, 150875, 170187, 250275, 283645, 299625, 417125, 452625, 850935, 1251375, 1418225, 4254675, 7091125, 21273375]

約数ペア:

[(1, 21273375), (3, 7091125), (5, 4254675), (15, 1418225), (17, 1251375), (25, 850935), (47, 452625), (51, 417125), (71, 299625), (75, 283645), (85, 250275), (125, 170187), (141, 150875), (213, 99875), (235, 90525), (255, 83425), (355, 59925), (375, 56729), (425, 50055), (705, 30175), (799, 26625), (1065, 19975), (1175, 18105), (1207, 17625), (1275, 16685), (1775, 11985), (2125, 10011), (2397, 8875), (3337, 6375), (3525, 6035), (3621, 5875), (3995, 5325)]