18017820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3229}}^1$

素因数の和:3275

約数の個数: 72

約数和(自身を含む): 56434560

約数和(自身を除く): 38416740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 3229, 5580, 6458, 9687, 12916, 16145, 19374, 29061, 32290, 38748, 48435, 58122, 64580, 96870, 100099, 116244, 145305, 193740, 200198, 290610, 300297, 400396, 500495, 581220, 600594, 900891, 1000990, 1201188, 1501485, 1801782, 2001980, 3002970, 3603564, 4504455, 6005940, 9008910, 18017820]

約数ペア:

[(1, 18017820), (2, 9008910), (3, 6005940), (4, 4504455), (5, 3603564), (6, 3002970), (9, 2001980), (10, 1801782), (12, 1501485), (15, 1201188), (18, 1000990), (20, 900891), (30, 600594), (31, 581220), (36, 500495), (45, 400396), (60, 300297), (62, 290610), (90, 200198), (93, 193740), (124, 145305), (155, 116244), (180, 100099), (186, 96870), (279, 64580), (310, 58122), (372, 48435), (465, 38748), (558, 32290), (620, 29061), (930, 19374), (1116, 16145), (1395, 12916), (1860, 9687), (2790, 6458), (3229, 5580)]