21130304

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1$

素因数の和:367

約数の個数: 56

約数和(自身を含む): 45765720

約数和(自身を除く): 24635416

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 109, 208, 218, 233, 416, 436, 466, 832, 872, 932, 1417, 1744, 1864, 2834, 3029, 3488, 3728, 5668, 6058, 6976, 7456, 11336, 12116, 14912, 22672, 24232, 25397, 45344, 48464, 50794, 90688, 96928, 101588, 193856, 203176, 330161, 406352, 660322, 812704, 1320644, 1625408, 2641288, 5282576, 10565152, 21130304]

約数ペア:

[(1, 21130304), (2, 10565152), (4, 5282576), (8, 2641288), (13, 1625408), (16, 1320644), (26, 812704), (32, 660322), (52, 406352), (64, 330161), (104, 203176), (109, 193856), (208, 101588), (218, 96928), (233, 90688), (416, 50794), (436, 48464), (466, 45344), (832, 25397), (872, 24232), (932, 22672), (1417, 14912), (1744, 12116), (1864, 11336), (2834, 7456), (3029, 6976), (3488, 6058), (3728, 5668)]