21785751

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2357}}^1$

素因数の和:2455

約数の個数: 24

約数和(自身を含む): 34332480

約数和(自身を除く): 12546729

約数列:

[1, 3, 9, 13, 39, 79, 117, 237, 711, 1027, 2357, 3081, 7071, 9243, 21213, 30641, 91923, 186203, 275769, 558609, 1675827, 2420639, 7261917, 21785751]

約数ペア:

[(1, 21785751), (3, 7261917), (9, 2420639), (13, 1675827), (39, 558609), (79, 275769), (117, 186203), (237, 91923), (711, 30641), (1027, 21213), (2357, 9243), (3081, 7071)]