81007420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311567}}^1$

素因数の和:311589

約数の個数: 24

約数和(自身を含む): 183201984

約数和(自身を除く): 102194564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 311567, 623134, 1246268, 1557835, 3115670, 4050371, 6231340, 8100742, 16201484, 20251855, 40503710, 81007420]

約数ペア:

[(1, 81007420), (2, 40503710), (4, 20251855), (5, 16201484), (10, 8100742), (13, 6231340), (20, 4050371), (26, 3115670), (52, 1557835), (65, 1246268), (130, 623134), (260, 311567)]