19902990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{22877}}^1$

素因数の和:22916

約数の個数: 32

約数和(自身を含む): 49416480

約数和(自身を除く): 29513490

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 435, 870, 22877, 45754, 68631, 114385, 137262, 228770, 343155, 663433, 686310, 1326866, 1990299, 3317165, 3980598, 6634330, 9951495, 19902990]

約数ペア:

[(1, 19902990), (2, 9951495), (3, 6634330), (5, 3980598), (6, 3317165), (10, 1990299), (15, 1326866), (29, 686310), (30, 663433), (58, 343155), (87, 228770), (145, 137262), (174, 114385), (290, 68631), (435, 45754), (870, 22877)]