21248578

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{643}}^1$

素因数の和:730

約数の個数: 32

約数和(自身を含む): 36352512

約数和(自身を除く): 15103934

約数列:

[1, 2, 13, 26, 31, 41, 62, 82, 403, 533, 643, 806, 1066, 1271, 1286, 2542, 8359, 16523, 16718, 19933, 26363, 33046, 39866, 52726, 259129, 342719, 518258, 685438, 817253, 1634506, 10624289, 21248578]

約数ペア:

[(1, 21248578), (2, 10624289), (13, 1634506), (26, 817253), (31, 685438), (41, 518258), (62, 342719), (82, 259129), (403, 52726), (533, 39866), (643, 33046), (806, 26363), (1066, 19933), (1271, 16718), (1286, 16523), (2542, 8359)]