64721520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{89891}}^1$

素因数の和:89910

約数の個数: 60

約数和(自身を含む): 217358856

約数和(自身を除く): 152637336

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 89891, 179782, 269673, 359564, 449455, 539346, 719128, 809019, 898910, 1078692, 1348365, 1438256, 1618038, 1797820, 2157384, 2696730, 3236076, 3595640, 4045095, 4314768, 5393460, 6472152, 7191280, 8090190, 10786920, 12944304, 16180380, 21573840, 32360760, 64721520]

約数ペア:

[(1, 64721520), (2, 32360760), (3, 21573840), (4, 16180380), (5, 12944304), (6, 10786920), (8, 8090190), (9, 7191280), (10, 6472152), (12, 5393460), (15, 4314768), (16, 4045095), (18, 3595640), (20, 3236076), (24, 2696730), (30, 2157384), (36, 1797820), (40, 1618038), (45, 1438256), (48, 1348365), (60, 1078692), (72, 898910), (80, 809019), (90, 719128), (120, 539346), (144, 449455), (180, 359564), (240, 269673), (360, 179782), (720, 89891)]