20455380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10331}}^1$

素因数の和:10357

約数の個数: 72

約数和(自身を含む): 67695264

約数和(自身を除く): 47239884

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10331, 20662, 30993, 41324, 51655, 61986, 92979, 103310, 113641, 123972, 154965, 185958, 206620, 227282, 309930, 340923, 371916, 454564, 464895, 568205, 619860, 681846, 929790, 1022769, 1136410, 1363692, 1704615, 1859580, 2045538, 2272820, 3409230, 4091076, 5113845, 6818460, 10227690, 20455380]

約数ペア:

[(1, 20455380), (2, 10227690), (3, 6818460), (4, 5113845), (5, 4091076), (6, 3409230), (9, 2272820), (10, 2045538), (11, 1859580), (12, 1704615), (15, 1363692), (18, 1136410), (20, 1022769), (22, 929790), (30, 681846), (33, 619860), (36, 568205), (44, 464895), (45, 454564), (55, 371916), (60, 340923), (66, 309930), (90, 227282), (99, 206620), (110, 185958), (132, 154965), (165, 123972), (180, 113641), (198, 103310), (220, 92979), (330, 61986), (396, 51655), (495, 41324), (660, 30993), (990, 20662), (1980, 10331)]