20832280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1583}}^1$

素因数の和:1648

約数の個数: 64

約数和(自身を含む): 54743040

約数和(自身を除く): 33910760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1316, 1583, 1645, 1880, 2632, 3166, 3290, 6332, 6580, 7915, 11081, 12664, 13160, 15830, 22162, 31660, 44324, 55405, 63320, 74401, 88648, 110810, 148802, 221620, 297604, 372005, 443240, 520807, 595208, 744010, 1041614, 1488020, 2083228, 2604035, 2976040, 4166456, 5208070, 10416140, 20832280]

約数ペア:

[(1, 20832280), (2, 10416140), (4, 5208070), (5, 4166456), (7, 2976040), (8, 2604035), (10, 2083228), (14, 1488020), (20, 1041614), (28, 744010), (35, 595208), (40, 520807), (47, 443240), (56, 372005), (70, 297604), (94, 221620), (140, 148802), (188, 110810), (235, 88648), (280, 74401), (329, 63320), (376, 55405), (470, 44324), (658, 31660), (940, 22162), (1316, 15830), (1583, 13160), (1645, 12664), (1880, 11081), (2632, 7915), (3166, 6580), (3290, 6332)]