78903820

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{9371}}^1$

素因数の和:9801

約数の個数: 24

約数和(自身を含む): 166109328

約数和(自身を除く): 87205508

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 8420, 9371, 18742, 37484, 46855, 93710, 187420, 3945191, 7890382, 15780764, 19725955, 39451910, 78903820]

約数ペア:

[(1, 78903820), (2, 39451910), (4, 19725955), (5, 15780764), (10, 7890382), (20, 3945191), (421, 187420), (842, 93710), (1684, 46855), (2105, 37484), (4210, 18742), (8420, 9371)]