20388264

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{647}}^1$

素因数の和:770

約数の個数: 64

約数和(自身を含む): 55520640

約数和(自身を除く): 35132376

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 101, 104, 156, 202, 303, 312, 404, 606, 647, 808, 1212, 1294, 1313, 1941, 2424, 2588, 2626, 3882, 3939, 5176, 5252, 7764, 7878, 8411, 10504, 15528, 15756, 16822, 25233, 31512, 33644, 50466, 65347, 67288, 100932, 130694, 196041, 201864, 261388, 392082, 522776, 784164, 849511, 1568328, 1699022, 2548533, 3398044, 5097066, 6796088, 10194132, 20388264]

約数ペア:

[(1, 20388264), (2, 10194132), (3, 6796088), (4, 5097066), (6, 3398044), (8, 2548533), (12, 1699022), (13, 1568328), (24, 849511), (26, 784164), (39, 522776), (52, 392082), (78, 261388), (101, 201864), (104, 196041), (156, 130694), (202, 100932), (303, 67288), (312, 65347), (404, 50466), (606, 33644), (647, 31512), (808, 25233), (1212, 16822), (1294, 15756), (1313, 15528), (1941, 10504), (2424, 8411), (2588, 7878), (2626, 7764), (3882, 5252), (3939, 5176)]