20189799

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{167}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 35642880

約数和(自身を除く): 15453081

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 101, 133, 167, 171, 303, 399, 501, 707, 909, 1169, 1197, 1503, 1919, 2121, 3173, 3507, 5757, 6363, 9519, 10521, 13433, 16867, 17271, 22211, 28557, 40299, 50601, 66633, 118069, 120897, 151803, 199899, 320473, 354207, 961419, 1062621, 2243311, 2884257, 6729933, 20189799]

約数ペア:

[(1, 20189799), (3, 6729933), (7, 2884257), (9, 2243311), (19, 1062621), (21, 961419), (57, 354207), (63, 320473), (101, 199899), (133, 151803), (167, 120897), (171, 118069), (303, 66633), (399, 50601), (501, 40299), (707, 28557), (909, 22211), (1169, 17271), (1197, 16867), (1503, 13433), (1919, 10521), (2121, 9519), (3173, 6363), (3507, 5757)]