21069256

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{701}}^1$

素因数の和:754

約数の個数: 48

約数和(自身を含む): 45257940

約数和(自身を除く): 24188684

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 289, 442, 578, 701, 884, 1156, 1402, 1768, 2312, 2804, 3757, 5608, 7514, 9113, 11917, 15028, 18226, 23834, 30056, 36452, 47668, 72904, 95336, 154921, 202589, 309842, 405178, 619684, 810356, 1239368, 1620712, 2633657, 5267314, 10534628, 21069256]

約数ペア:

[(1, 21069256), (2, 10534628), (4, 5267314), (8, 2633657), (13, 1620712), (17, 1239368), (26, 810356), (34, 619684), (52, 405178), (68, 309842), (104, 202589), (136, 154921), (221, 95336), (289, 72904), (442, 47668), (578, 36452), (701, 30056), (884, 23834), (1156, 18226), (1402, 15028), (1768, 11917), (2312, 9113), (2804, 7514), (3757, 5608)]