81318905

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 106634880

約数和(自身を除く): 25315975

約数列:

[1, 5, 17, 67, 85, 109, 131, 335, 545, 655, 1139, 1853, 2227, 5695, 7303, 8777, 9265, 11135, 14279, 36515, 43885, 71395, 124151, 149209, 242743, 620755, 746045, 956693, 1213715, 4783465, 16263781, 81318905]

約数ペア:

[(1, 81318905), (5, 16263781), (17, 4783465), (67, 1213715), (85, 956693), (109, 746045), (131, 620755), (335, 242743), (545, 149209), (655, 124151), (1139, 71395), (1853, 43885), (2227, 36515), (5695, 14279), (7303, 11135), (8777, 9265)]