17990820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{787}}^1$

素因数の和:929

約数の個数: 72

約数和(自身を含む): 55071744

約数和(自身を除く): 37080924

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 127, 180, 254, 381, 508, 635, 762, 787, 1143, 1270, 1524, 1574, 1905, 2286, 2361, 2540, 3148, 3810, 3935, 4572, 4722, 5715, 7083, 7620, 7870, 9444, 11430, 11805, 14166, 15740, 22860, 23610, 28332, 35415, 47220, 70830, 99949, 141660, 199898, 299847, 399796, 499745, 599694, 899541, 999490, 1199388, 1499235, 1799082, 1998980, 2998470, 3598164, 4497705, 5996940, 8995410, 17990820]

約数ペア:

[(1, 17990820), (2, 8995410), (3, 5996940), (4, 4497705), (5, 3598164), (6, 2998470), (9, 1998980), (10, 1799082), (12, 1499235), (15, 1199388), (18, 999490), (20, 899541), (30, 599694), (36, 499745), (45, 399796), (60, 299847), (90, 199898), (127, 141660), (180, 99949), (254, 70830), (381, 47220), (508, 35415), (635, 28332), (762, 23610), (787, 22860), (1143, 15740), (1270, 14166), (1524, 11805), (1574, 11430), (1905, 9444), (2286, 7870), (2361, 7620), (2540, 7083), (3148, 5715), (3810, 4722), (3935, 4572)]