20773980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{881}}^1$

素因数の和:1027

約数の個数: 72

約数和(自身を含む): 63567504

約数和(自身を除く): 42793524

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 131, 180, 262, 393, 524, 655, 786, 881, 1179, 1310, 1572, 1762, 1965, 2358, 2620, 2643, 3524, 3930, 4405, 4716, 5286, 5895, 7860, 7929, 8810, 10572, 11790, 13215, 15858, 17620, 23580, 26430, 31716, 39645, 52860, 79290, 115411, 158580, 230822, 346233, 461644, 577055, 692466, 1038699, 1154110, 1384932, 1731165, 2077398, 2308220, 3462330, 4154796, 5193495, 6924660, 10386990, 20773980]

約数ペア:

[(1, 20773980), (2, 10386990), (3, 6924660), (4, 5193495), (5, 4154796), (6, 3462330), (9, 2308220), (10, 2077398), (12, 1731165), (15, 1384932), (18, 1154110), (20, 1038699), (30, 692466), (36, 577055), (45, 461644), (60, 346233), (90, 230822), (131, 158580), (180, 115411), (262, 79290), (393, 52860), (524, 39645), (655, 31716), (786, 26430), (881, 23580), (1179, 17620), (1310, 15858), (1572, 13215), (1762, 11790), (1965, 10572), (2358, 8810), (2620, 7929), (2643, 7860), (3524, 5895), (3930, 5286), (4405, 4716)]