18690520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15073}}^1$

素因数の和:15115

約数の個数: 32

約数和(自身を含む): 43413120

約数和(自身を除く): 24722600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15073, 30146, 60292, 75365, 120584, 150730, 301460, 467263, 602920, 934526, 1869052, 2336315, 3738104, 4672630, 9345260, 18690520]

約数ペア:

[(1, 18690520), (2, 9345260), (4, 4672630), (5, 3738104), (8, 2336315), (10, 1869052), (20, 934526), (31, 602920), (40, 467263), (62, 301460), (124, 150730), (155, 120584), (248, 75365), (310, 60292), (620, 30146), (1240, 15073)]