21000888052

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{499}}^1\times {\mathrm{3797}}^1$

素因数の和:4480

約数の個数: 48

約数和(自身を含む): 39240936000

約数和(自身を除く): 18240047948

約数列:

[1, 2, 4, 17, 34, 68, 163, 326, 499, 652, 998, 1996, 2771, 3797, 5542, 7594, 8483, 11084, 15188, 16966, 33932, 64549, 81337, 129098, 162674, 258196, 325348, 618911, 1237822, 1382729, 1894703, 2475644, 2765458, 3789406, 5530916, 7578812, 10521487, 21042974, 32209951, 42085948, 64419902, 128839804, 308836589, 617673178, 1235346356, 5250222013, 10500444026, 21000888052]

約数ペア:

[(1, 21000888052), (2, 10500444026), (4, 5250222013), (17, 1235346356), (34, 617673178), (68, 308836589), (163, 128839804), (326, 64419902), (499, 42085948), (652, 32209951), (998, 21042974), (1996, 10521487), (2771, 7578812), (3797, 5530916), (5542, 3789406), (7594, 2765458), (8483, 2475644), (11084, 1894703), (15188, 1382729), (16966, 1237822), (33932, 618911), (64549, 325348), (81337, 258196), (129098, 162674)]