721245780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{10093}}^1$

素因数の和:10505

約数の個数: 72

約数和(自身を含む): 2193506952

約数和(自身を除く): 1472261172

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 397, 794, 1191, 1588, 1985, 2382, 3573, 3970, 4764, 5955, 7146, 7940, 10093, 11910, 14292, 17865, 20186, 23820, 30279, 35730, 40372, 50465, 60558, 71460, 90837, 100930, 121116, 151395, 181674, 201860, 302790, 363348, 454185, 605580, 908370, 1816740, 4006921, 8013842, 12020763, 16027684, 20034605, 24041526, 36062289, 40069210, 48083052, 60103815, 72124578, 80138420, 120207630, 144249156, 180311445, 240415260, 360622890, 721245780]

約数ペア:

[(1, 721245780), (2, 360622890), (3, 240415260), (4, 180311445), (5, 144249156), (6, 120207630), (9, 80138420), (10, 72124578), (12, 60103815), (15, 48083052), (18, 40069210), (20, 36062289), (30, 24041526), (36, 20034605), (45, 16027684), (60, 12020763), (90, 8013842), (180, 4006921), (397, 1816740), (794, 908370), (1191, 605580), (1588, 454185), (1985, 363348), (2382, 302790), (3573, 201860), (3970, 181674), (4764, 151395), (5955, 121116), (7146, 100930), (7940, 90837), (10093, 71460), (11910, 60558), (14292, 50465), (17865, 40372), (20186, 35730), (23820, 30279)]