81348785

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{821}}^1$

素因数の和:1001

約数の個数: 32

約数和(自身を含む): 118368000

約数和(自身を除く): 37019215

約数列:

[1, 5, 7, 19, 35, 95, 133, 149, 665, 745, 821, 1043, 2831, 4105, 5215, 5747, 14155, 15599, 19817, 28735, 77995, 99085, 109193, 122329, 545965, 611645, 856303, 2324251, 4281515, 11621255, 16269757, 81348785]

約数ペア:

[(1, 81348785), (5, 16269757), (7, 11621255), (19, 4281515), (35, 2324251), (95, 856303), (133, 611645), (149, 545965), (665, 122329), (745, 109193), (821, 99085), (1043, 77995), (2831, 28735), (4105, 19817), (5215, 15599), (5747, 14155)]