21096616

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{331}}^1$

素因数の和:625

約数の個数: 32

約数和(自身を含む): 41114880

約数和(自身を除く): 20018264

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 257, 331, 514, 662, 1028, 1324, 2056, 2648, 7967, 10261, 15934, 20522, 31868, 41044, 63736, 82088, 85067, 170134, 340268, 680536, 2637077, 5274154, 10548308, 21096616]

約数ペア:

[(1, 21096616), (2, 10548308), (4, 5274154), (8, 2637077), (31, 680536), (62, 340268), (124, 170134), (248, 85067), (257, 82088), (331, 63736), (514, 41044), (662, 31868), (1028, 20522), (1324, 15934), (2056, 10261), (2648, 7967)]