21885080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1663}}^1$

素因数の和:1728

約数の個数: 64

約数和(自身を含む): 57507840

約数和(自身を除く): 35622760

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, 1645, 1663, 1880, 2632, 3290, 3326, 6580, 6652, 8315, 11641, 13160, 13304, 16630, 23282, 33260, 46564, 58205, 66520, 78161, 93128, 116410, 156322, 232820, 312644, 390805, 465640, 547127, 625288, 781610, 1094254, 1563220, 2188508, 2735635, 3126440, 4377016, 5471270, 10942540, 21885080]

約数ペア:

[(1, 21885080), (2, 10942540), (4, 5471270), (5, 4377016), (7, 3126440), (8, 2735635), (10, 2188508), (14, 1563220), (20, 1094254), (28, 781610), (35, 625288), (40, 547127), (47, 465640), (56, 390805), (70, 312644), (94, 232820), (140, 156322), (188, 116410), (235, 93128), (280, 78161), (329, 66520), (376, 58205), (470, 46564), (658, 33260), (940, 23282), (1316, 16630), (1645, 13304), (1663, 13160), (1880, 11641), (2632, 8315), (3290, 6652), (3326, 6580)]