81007160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{155783}}^1$

素因数の和:155807

約数の個数: 32

約数和(自身を含む): 196287840

約数和(自身を除く): 115280680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 155783, 311566, 623132, 778915, 1246264, 1557830, 2025179, 3115660, 4050358, 6231320, 8100716, 10125895, 16201432, 20251790, 40503580, 81007160]

約数ペア:

[(1, 81007160), (2, 40503580), (4, 20251790), (5, 16201432), (8, 10125895), (10, 8100716), (13, 6231320), (20, 4050358), (26, 3115660), (40, 2025179), (52, 1557830), (65, 1246264), (104, 778915), (130, 623132), (260, 311566), (520, 155783)]