2991080

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:138

約数の個数: 64

約数和(自身を含む): 7223040

約数和(自身を除く): 4231960

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 43, 47, 74, 86, 94, 148, 172, 185, 188, 215, 235, 296, 344, 370, 376, 430, 470, 740, 860, 940, 1480, 1591, 1720, 1739, 1880, 2021, 3182, 3478, 4042, 6364, 6956, 7955, 8084, 8695, 10105, 12728, 13912, 15910, 16168, 17390, 20210, 31820, 34780, 40420, 63640, 69560, 74777, 80840, 149554, 299108, 373885, 598216, 747770, 1495540, 2991080]

約数ペア:

[(1, 2991080), (2, 1495540), (4, 747770), (5, 598216), (8, 373885), (10, 299108), (20, 149554), (37, 80840), (40, 74777), (43, 69560), (47, 63640), (74, 40420), (86, 34780), (94, 31820), (148, 20210), (172, 17390), (185, 16168), (188, 15910), (215, 13912), (235, 12728), (296, 10105), (344, 8695), (370, 8084), (376, 7955), (430, 6956), (470, 6364), (740, 4042), (860, 3478), (940, 3182), (1480, 2021), (1591, 1880), (1720, 1739)]