20716556

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{823}}^1$

素因数の和:894

約数の個数: 48

約数和(自身を含む): 44298240

約数和(自身を除く): 23581684

約数列:

[1, 2, 4, 7, 14, 28, 29, 31, 58, 62, 116, 124, 203, 217, 406, 434, 812, 823, 868, 899, 1646, 1798, 3292, 3596, 5761, 6293, 11522, 12586, 23044, 23867, 25172, 25513, 47734, 51026, 95468, 102052, 167069, 178591, 334138, 357182, 668276, 714364, 739877, 1479754, 2959508, 5179139, 10358278, 20716556]

約数ペア:

[(1, 20716556), (2, 10358278), (4, 5179139), (7, 2959508), (14, 1479754), (28, 739877), (29, 714364), (31, 668276), (58, 357182), (62, 334138), (116, 178591), (124, 167069), (203, 102052), (217, 95468), (406, 51026), (434, 47734), (812, 25513), (823, 25172), (868, 23867), (899, 23044), (1646, 12586), (1798, 11522), (3292, 6293), (3596, 5761)]