21937720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1667}}^1$

素因数の和:1732

約数の個数: 64

約数和(自身を含む): 57646080

約数和(自身を除く): 35708360

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, 1667, 1880, 2632, 3290, 3334, 6580, 6668, 8335, 11669, 13160, 13336, 16670, 23338, 33340, 46676, 58345, 66680, 78349, 93352, 116690, 156698, 233380, 313396, 391745, 466760, 548443, 626792, 783490, 1096886, 1566980, 2193772, 2742215, 3133960, 4387544, 5484430, 10968860, 21937720]

約数ペア:

[(1, 21937720), (2, 10968860), (4, 5484430), (5, 4387544), (7, 3133960), (8, 2742215), (10, 2193772), (14, 1566980), (20, 1096886), (28, 783490), (35, 626792), (40, 548443), (47, 466760), (56, 391745), (70, 313396), (94, 233380), (140, 156698), (188, 116690), (235, 93352), (280, 78349), (329, 66680), (376, 58345), (470, 46676), (658, 33340), (940, 23338), (1316, 16670), (1645, 13336), (1667, 13160), (1880, 11669), (2632, 8335), (3290, 6668), (3334, 6580)]