21055080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2221}}^1$

素因数の和:2314

約数の個数: 64

約数和(自身を含む): 63993600

約数和(自身を除く): 42938520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 79, 120, 158, 237, 316, 395, 474, 632, 790, 948, 1185, 1580, 1896, 2221, 2370, 3160, 4442, 4740, 6663, 8884, 9480, 11105, 13326, 17768, 22210, 26652, 33315, 44420, 53304, 66630, 88840, 133260, 175459, 266520, 350918, 526377, 701836, 877295, 1052754, 1403672, 1754590, 2105508, 2631885, 3509180, 4211016, 5263770, 7018360, 10527540, 21055080]

約数ペア:

[(1, 21055080), (2, 10527540), (3, 7018360), (4, 5263770), (5, 4211016), (6, 3509180), (8, 2631885), (10, 2105508), (12, 1754590), (15, 1403672), (20, 1052754), (24, 877295), (30, 701836), (40, 526377), (60, 350918), (79, 266520), (120, 175459), (158, 133260), (237, 88840), (316, 66630), (395, 53304), (474, 44420), (632, 33315), (790, 26652), (948, 22210), (1185, 17768), (1580, 13326), (1896, 11105), (2221, 9480), (2370, 8884), (3160, 6663), (4442, 4740)]