21996380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{2663}}^1$

素因数の和:2738

約数の個数: 48

約数和(自身を含む): 53706240

約数和(自身を除く): 31709860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 59, 70, 118, 140, 236, 295, 413, 590, 826, 1180, 1652, 2065, 2663, 4130, 5326, 8260, 10652, 13315, 18641, 26630, 37282, 53260, 74564, 93205, 157117, 186410, 314234, 372820, 628468, 785585, 1099819, 1571170, 2199638, 3142340, 4399276, 5499095, 10998190, 21996380]

約数ペア:

[(1, 21996380), (2, 10998190), (4, 5499095), (5, 4399276), (7, 3142340), (10, 2199638), (14, 1571170), (20, 1099819), (28, 785585), (35, 628468), (59, 372820), (70, 314234), (118, 186410), (140, 157117), (236, 93205), (295, 74564), (413, 53260), (590, 37282), (826, 26630), (1180, 18641), (1652, 13315), (2065, 10652), (2663, 8260), (4130, 5326)]