19620990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{701}}^1$

素因数の和:1025

約数の個数: 48

約数和(自身を含む): 51251616

約数和(自身を除く): 31630626

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 311, 622, 701, 933, 1402, 1555, 1866, 2103, 2799, 3110, 3505, 4206, 4665, 5598, 6309, 7010, 9330, 10515, 12618, 13995, 21030, 27990, 31545, 63090, 218011, 436022, 654033, 1090055, 1308066, 1962099, 2180110, 3270165, 3924198, 6540330, 9810495, 19620990]

約数ペア:

[(1, 19620990), (2, 9810495), (3, 6540330), (5, 3924198), (6, 3270165), (9, 2180110), (10, 1962099), (15, 1308066), (18, 1090055), (30, 654033), (45, 436022), (90, 218011), (311, 63090), (622, 31545), (701, 27990), (933, 21030), (1402, 13995), (1555, 12618), (1866, 10515), (2103, 9330), (2799, 7010), (3110, 6309), (3505, 5598), (4206, 4665)]