21128625

素因数分解:

$3^2\times 5^3\times 7^1\times {\mathrm{2683}}^1$

素因数の和:2711

約数の個数: 48

約数和(自身を含む): 43545216

約数和(自身を除く): 22416591

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 125, 175, 225, 315, 375, 525, 875, 1125, 1575, 2625, 2683, 7875, 8049, 13415, 18781, 24147, 40245, 56343, 67075, 93905, 120735, 169029, 201225, 281715, 335375, 469525, 603675, 845145, 1006125, 1408575, 2347625, 3018375, 4225725, 7042875, 21128625]

約数ペア:

[(1, 21128625), (3, 7042875), (5, 4225725), (7, 3018375), (9, 2347625), (15, 1408575), (21, 1006125), (25, 845145), (35, 603675), (45, 469525), (63, 335375), (75, 281715), (105, 201225), (125, 169029), (175, 120735), (225, 93905), (315, 67075), (375, 56343), (525, 40245), (875, 24147), (1125, 18781), (1575, 13415), (2625, 8049), (2683, 7875)]