20798855

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{607}}^1$

素因数の和:719

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10719865

約数列:

[1, 5, 7, 11, 35, 55, 77, 89, 385, 445, 607, 623, 979, 3035, 3115, 4249, 4895, 6677, 6853, 21245, 33385, 34265, 46739, 54023, 233695, 270115, 378161, 594253, 1890805, 2971265, 4159771, 20798855]

約数ペア:

[(1, 20798855), (5, 4159771), (7, 2971265), (11, 1890805), (35, 594253), (55, 378161), (77, 270115), (89, 233695), (385, 54023), (445, 46739), (607, 34265), (623, 33385), (979, 21245), (3035, 6853), (3115, 6677), (4249, 4895)]