81510910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{1277}}^1$

素因数の和:1788

約数の個数: 32

約数和(自身を含む): 158451552

約数和(自身を除く): 76940642

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 491, 982, 1277, 2455, 2554, 4910, 6383, 6385, 12766, 12770, 16601, 31915, 33202, 63830, 83005, 166010, 627007, 1254014, 3135035, 6270070, 8151091, 16302182, 40755455, 81510910]

約数ペア:

[(1, 81510910), (2, 40755455), (5, 16302182), (10, 8151091), (13, 6270070), (26, 3135035), (65, 1254014), (130, 627007), (491, 166010), (982, 83005), (1277, 63830), (2455, 33202), (2554, 31915), (4910, 16601), (6383, 12770), (6385, 12766)]