21702765

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1487}}^1$

素因数の和:1641

約数の個数: 32

約数和(自身を含む): 39997440

約数和(自身を除く): 18294675

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 139, 417, 695, 973, 1487, 2085, 2919, 4461, 4865, 7435, 10409, 14595, 22305, 31227, 52045, 156135, 206693, 620079, 1033465, 1446851, 3100395, 4340553, 7234255, 21702765]

約数ペア:

[(1, 21702765), (3, 7234255), (5, 4340553), (7, 3100395), (15, 1446851), (21, 1033465), (35, 620079), (105, 206693), (139, 156135), (417, 52045), (695, 31227), (973, 22305), (1487, 14595), (2085, 10409), (2919, 7435), (4461, 4865)]