20510091

素因数分解:

$3^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{593}}^1$

素因数の和:673

約数の個数: 40

約数和(自身を含む): 35649504

約数和(自身を除く): 15139413

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 81, 183, 189, 427, 549, 567, 593, 1281, 1647, 1779, 3843, 4151, 4941, 5337, 11529, 12453, 16011, 34587, 36173, 37359, 48033, 108519, 112077, 253211, 325557, 336231, 759633, 976671, 2278899, 2930013, 6836697, 20510091]

約数ペア:

[(1, 20510091), (3, 6836697), (7, 2930013), (9, 2278899), (21, 976671), (27, 759633), (61, 336231), (63, 325557), (81, 253211), (183, 112077), (189, 108519), (427, 48033), (549, 37359), (567, 36173), (593, 34587), (1281, 16011), (1647, 12453), (1779, 11529), (3843, 5337), (4151, 4941)]