20490720

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{42689}}^1$

素因数の和:42707

約数の個数: 48

約数和(自身を含む): 64547280

約数和(自身を除く): 44056560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480, 42689, 85378, 128067, 170756, 213445, 256134, 341512, 426890, 512268, 640335, 683024, 853780, 1024536, 1280670, 1366048, 1707560, 2049072, 2561340, 3415120, 4098144, 5122680, 6830240, 10245360, 20490720]

約数ペア:

[(1, 20490720), (2, 10245360), (3, 6830240), (4, 5122680), (5, 4098144), (6, 3415120), (8, 2561340), (10, 2049072), (12, 1707560), (15, 1366048), (16, 1280670), (20, 1024536), (24, 853780), (30, 683024), (32, 640335), (40, 512268), (48, 426890), (60, 341512), (80, 256134), (96, 213445), (120, 170756), (160, 128067), (240, 85378), (480, 42689)]