20020875

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:317

約数の個数: 64

約数和(自身を含む): 39536640

約数和(自身を除く): 19515765

約数列:

[1, 3, 5, 7, 15, 21, 25, 29, 35, 75, 87, 105, 125, 145, 175, 203, 263, 375, 435, 525, 609, 725, 789, 875, 1015, 1315, 1841, 2175, 2625, 3045, 3625, 3945, 5075, 5523, 6575, 7627, 9205, 10875, 15225, 19725, 22881, 25375, 27615, 32875, 38135, 46025, 53389, 76125, 98625, 114405, 138075, 160167, 190675, 230125, 266945, 572025, 690375, 800835, 953375, 1334725, 2860125, 4004175, 6673625, 20020875]

約数ペア:

[(1, 20020875), (3, 6673625), (5, 4004175), (7, 2860125), (15, 1334725), (21, 953375), (25, 800835), (29, 690375), (35, 572025), (75, 266945), (87, 230125), (105, 190675), (125, 160167), (145, 138075), (175, 114405), (203, 98625), (263, 76125), (375, 53389), (435, 46025), (525, 38135), (609, 32875), (725, 27615), (789, 25375), (875, 22881), (1015, 19725), (1315, 15225), (1841, 10875), (2175, 9205), (2625, 7627), (3045, 6575), (3625, 5523), (3945, 5075)]