81273840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{853}}^1$

素因数の和:1266

約数の個数: 80

約数和(自身を含む): 252879648

約数和(自身を除く): 171605808

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 397, 794, 853, 1191, 1588, 1706, 1985, 2382, 2559, 3176, 3412, 3970, 4265, 4764, 5118, 5955, 6352, 6824, 7940, 8530, 9528, 10236, 11910, 12795, 13648, 15880, 17060, 19056, 20472, 23820, 25590, 31760, 34120, 40944, 47640, 51180, 68240, 95280, 102360, 204720, 338641, 677282, 1015923, 1354564, 1693205, 2031846, 2709128, 3386410, 4063692, 5079615, 5418256, 6772820, 8127384, 10159230, 13545640, 16254768, 20318460, 27091280, 40636920, 81273840]

約数ペア:

[(1, 81273840), (2, 40636920), (3, 27091280), (4, 20318460), (5, 16254768), (6, 13545640), (8, 10159230), (10, 8127384), (12, 6772820), (15, 5418256), (16, 5079615), (20, 4063692), (24, 3386410), (30, 2709128), (40, 2031846), (48, 1693205), (60, 1354564), (80, 1015923), (120, 677282), (240, 338641), (397, 204720), (794, 102360), (853, 95280), (1191, 68240), (1588, 51180), (1706, 47640), (1985, 40944), (2382, 34120), (2559, 31760), (3176, 25590), (3412, 23820), (3970, 20472), (4265, 19056), (4764, 17060), (5118, 15880), (5955, 13648), (6352, 12795), (6824, 11910), (7940, 10236), (8530, 9528)]