21087448

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{239}}^1\times {\mathrm{269}}^1$

素因数の和:555

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 19736552

約数列:

[1, 2, 4, 8, 41, 82, 164, 239, 269, 328, 478, 538, 956, 1076, 1912, 2152, 9799, 11029, 19598, 22058, 39196, 44116, 64291, 78392, 88232, 128582, 257164, 514328, 2635931, 5271862, 10543724, 21087448]

約数ペア:

[(1, 21087448), (2, 10543724), (4, 5271862), (8, 2635931), (41, 514328), (82, 257164), (164, 128582), (239, 88232), (269, 78392), (328, 64291), (478, 44116), (538, 39196), (956, 22058), (1076, 19598), (1912, 11029), (2152, 9799)]