19906245

素因数分解:

$3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2557}}^1$

素因数の和:2741

約数の個数: 24

約数和(自身を含む): 34717176

約数和(自身を除く): 14810931

約数列:

[1, 3, 5, 9, 15, 45, 173, 519, 865, 1557, 2557, 2595, 7671, 7785, 12785, 23013, 38355, 115065, 442361, 1327083, 2211805, 3981249, 6635415, 19906245]

約数ペア:

[(1, 19906245), (3, 6635415), (5, 3981249), (9, 2211805), (15, 1327083), (45, 442361), (173, 115065), (519, 38355), (865, 23013), (1557, 12785), (2557, 7785), (2595, 7671)]