20858728

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:298

約数の個数: 64

約数和(自身を含む): 46033920

約数和(自身を除く): 25175192

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 44, 68, 73, 88, 136, 146, 187, 191, 292, 374, 382, 584, 748, 764, 803, 1241, 1496, 1528, 1606, 2101, 2482, 3212, 3247, 4202, 4964, 6424, 6494, 8404, 9928, 12988, 13651, 13943, 16808, 25976, 27302, 27886, 35717, 54604, 55772, 71434, 109208, 111544, 142868, 153373, 237031, 285736, 306746, 474062, 613492, 948124, 1226984, 1896248, 2607341, 5214682, 10429364, 20858728]

約数ペア:

[(1, 20858728), (2, 10429364), (4, 5214682), (8, 2607341), (11, 1896248), (17, 1226984), (22, 948124), (34, 613492), (44, 474062), (68, 306746), (73, 285736), (88, 237031), (136, 153373), (146, 142868), (187, 111544), (191, 109208), (292, 71434), (374, 55772), (382, 54604), (584, 35717), (748, 27886), (764, 27302), (803, 25976), (1241, 16808), (1496, 13943), (1528, 13651), (1606, 12988), (2101, 9928), (2482, 8404), (3212, 6494), (3247, 6424), (4202, 4964)]