21000427916

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{1123}}^1\times {\mathrm{359621}}^1$

素因数の和:360761

約数の個数: 24

約数和(自身を含む): 39613082544

約数和(自身を除く): 18612654628

約数列:

[1, 2, 4, 13, 26, 52, 1123, 2246, 4492, 14599, 29198, 58396, 359621, 719242, 1438484, 4675073, 9350146, 18700292, 403854383, 807708766, 1615417532, 5250106979, 10500213958, 21000427916]

約数ペア:

[(1, 21000427916), (2, 10500213958), (4, 5250106979), (13, 1615417532), (26, 807708766), (52, 403854383), (1123, 18700292), (2246, 9350146), (4492, 4675073), (14599, 1438484), (29198, 719242), (58396, 359621)]