21028436

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{379}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 43794240

約数和(自身を除く): 22765804

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 97, 143, 194, 286, 379, 388, 572, 758, 1067, 1261, 1516, 2134, 2522, 4169, 4268, 4927, 5044, 8338, 9854, 13871, 16676, 19708, 27742, 36763, 54197, 55484, 73526, 108394, 147052, 216788, 404393, 477919, 808786, 955838, 1617572, 1911676, 5257109, 10514218, 21028436]

約数ペア:

[(1, 21028436), (2, 10514218), (4, 5257109), (11, 1911676), (13, 1617572), (22, 955838), (26, 808786), (44, 477919), (52, 404393), (97, 216788), (143, 147052), (194, 108394), (286, 73526), (379, 55484), (388, 54197), (572, 36763), (758, 27742), (1067, 19708), (1261, 16676), (1516, 13871), (2134, 9854), (2522, 8338), (4169, 5044), (4268, 4927)]