21385928

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{577}}^1$

素因数の和:737

約数の個数: 32

約数和(自身を含む): 41511960

約数和(自身を除く): 20126032

約数列:

[1, 2, 4, 8, 41, 82, 113, 164, 226, 328, 452, 577, 904, 1154, 2308, 4616, 4633, 9266, 18532, 23657, 37064, 47314, 65201, 94628, 130402, 189256, 260804, 521608, 2673241, 5346482, 10692964, 21385928]

約数ペア:

[(1, 21385928), (2, 10692964), (4, 5346482), (8, 2673241), (41, 521608), (82, 260804), (113, 189256), (164, 130402), (226, 94628), (328, 65201), (452, 47314), (577, 37064), (904, 23657), (1154, 18532), (2308, 9266), (4616, 4633)]