21165660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{1993}}^1$

素因数の和:2067

約数の個数: 72

約数和(自身を含む): 65323440

約数和(自身を除く): 44157780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 59, 60, 90, 118, 177, 180, 236, 295, 354, 531, 590, 708, 885, 1062, 1180, 1770, 1993, 2124, 2655, 3540, 3986, 5310, 5979, 7972, 9965, 10620, 11958, 17937, 19930, 23916, 29895, 35874, 39860, 59790, 71748, 89685, 117587, 119580, 179370, 235174, 352761, 358740, 470348, 587935, 705522, 1058283, 1175870, 1411044, 1763805, 2116566, 2351740, 3527610, 4233132, 5291415, 7055220, 10582830, 21165660]

約数ペア:

[(1, 21165660), (2, 10582830), (3, 7055220), (4, 5291415), (5, 4233132), (6, 3527610), (9, 2351740), (10, 2116566), (12, 1763805), (15, 1411044), (18, 1175870), (20, 1058283), (30, 705522), (36, 587935), (45, 470348), (59, 358740), (60, 352761), (90, 235174), (118, 179370), (177, 119580), (180, 117587), (236, 89685), (295, 71748), (354, 59790), (531, 39860), (590, 35874), (708, 29895), (885, 23916), (1062, 19930), (1180, 17937), (1770, 11958), (1993, 10620), (2124, 9965), (2655, 7972), (3540, 5979), (3986, 5310)]