21492260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{373}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 46998336

約数和(自身を除く): 25506076

約数列:

[1, 2, 4, 5, 10, 20, 43, 67, 86, 134, 172, 215, 268, 335, 373, 430, 670, 746, 860, 1340, 1492, 1865, 2881, 3730, 5762, 7460, 11524, 14405, 16039, 24991, 28810, 32078, 49982, 57620, 64156, 80195, 99964, 124955, 160390, 249910, 320780, 499820, 1074613, 2149226, 4298452, 5373065, 10746130, 21492260]

約数ペア:

[(1, 21492260), (2, 10746130), (4, 5373065), (5, 4298452), (10, 2149226), (20, 1074613), (43, 499820), (67, 320780), (86, 249910), (134, 160390), (172, 124955), (215, 99964), (268, 80195), (335, 64156), (373, 57620), (430, 49982), (670, 32078), (746, 28810), (860, 24991), (1340, 16039), (1492, 14405), (1865, 11524), (2881, 7460), (3730, 5762)]