20399220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{113329}}^1$

素因数の和:113344

約数の個数: 36

約数和(自身を含む): 61878180

約数和(自身を除く): 41478960

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 113329, 226658, 339987, 453316, 566645, 679974, 1019961, 1133290, 1359948, 1699935, 2039922, 2266580, 3399870, 4079844, 5099805, 6799740, 10199610, 20399220]

約数ペア:

[(1, 20399220), (2, 10199610), (3, 6799740), (4, 5099805), (5, 4079844), (6, 3399870), (9, 2266580), (10, 2039922), (12, 1699935), (15, 1359948), (18, 1133290), (20, 1019961), (30, 679974), (36, 566645), (45, 453316), (60, 339987), (90, 226658), (180, 113329)]