18721020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{509}}^1\times {\mathrm{613}}^1$

素因数の和:1134

約数の個数: 48

約数和(自身を含む): 52607520

約数和(自身を除く): 33886500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 509, 613, 1018, 1226, 1527, 1839, 2036, 2452, 2545, 3054, 3065, 3678, 5090, 6108, 6130, 7356, 7635, 9195, 10180, 12260, 15270, 18390, 30540, 36780, 312017, 624034, 936051, 1248068, 1560085, 1872102, 3120170, 3744204, 4680255, 6240340, 9360510, 18721020]

約数ペア:

[(1, 18721020), (2, 9360510), (3, 6240340), (4, 4680255), (5, 3744204), (6, 3120170), (10, 1872102), (12, 1560085), (15, 1248068), (20, 936051), (30, 624034), (60, 312017), (509, 36780), (613, 30540), (1018, 18390), (1226, 15270), (1527, 12260), (1839, 10180), (2036, 9195), (2452, 7635), (2545, 7356), (3054, 6130), (3065, 6108), (3678, 5090)]