18531820

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 40602240

約数和(自身を除く): 22070420

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 79, 148, 158, 185, 316, 317, 370, 395, 634, 740, 790, 1268, 1580, 1585, 2923, 3170, 5846, 6340, 11692, 11729, 14615, 23458, 25043, 29230, 46916, 50086, 58460, 58645, 100172, 117290, 125215, 234580, 250430, 500860, 926591, 1853182, 3706364, 4632955, 9265910, 18531820]

約数ペア:

[(1, 18531820), (2, 9265910), (4, 4632955), (5, 3706364), (10, 1853182), (20, 926591), (37, 500860), (74, 250430), (79, 234580), (148, 125215), (158, 117290), (185, 100172), (316, 58645), (317, 58460), (370, 50086), (395, 46916), (634, 29230), (740, 25043), (790, 23458), (1268, 14615), (1580, 11729), (1585, 11692), (2923, 6340), (3170, 5846)]