20565846500

素因数分解:

$2^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{389}}^1\times {\mathrm{2459}}^1$

素因数の和:2910

約数の個数: 96

約数和(自身を含む): 46097251200

約数和(自身を除く): 25531404700

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 389, 430, 500, 778, 860, 1075, 1556, 1945, 2150, 2459, 3890, 4300, 4918, 5375, 7780, 9725, 9836, 10750, 12295, 16727, 19450, 21500, 24590, 33454, 38900, 48625, 49180, 61475, 66908, 83635, 97250, 105737, 122950, 167270, 194500, 211474, 245900, 307375, 334540, 418175, 422948, 528685, 614750, 836350, 956551, 1057370, 1229500, 1672700, 1913102, 2090875, 2114740, 2643425, 3826204, 4181750, 4782755, 5286850, 8363500, 9565510, 10573700, 13217125, 19131020, 23913775, 26434250, 41131693, 47827550, 52868500, 82263386, 95655100, 119568875, 164526772, 205658465, 239137750, 411316930, 478275500, 822633860, 1028292325, 2056584650, 4113169300, 5141461625, 10282923250, 20565846500]

約数ペア:

[(1, 20565846500), (2, 10282923250), (4, 5141461625), (5, 4113169300), (10, 2056584650), (20, 1028292325), (25, 822633860), (43, 478275500), (50, 411316930), (86, 239137750), (100, 205658465), (125, 164526772), (172, 119568875), (215, 95655100), (250, 82263386), (389, 52868500), (430, 47827550), (500, 41131693), (778, 26434250), (860, 23913775), (1075, 19131020), (1556, 13217125), (1945, 10573700), (2150, 9565510), (2459, 8363500), (3890, 5286850), (4300, 4782755), (4918, 4181750), (5375, 3826204), (7780, 2643425), (9725, 2114740), (9836, 2090875), (10750, 1913102), (12295, 1672700), (16727, 1229500), (19450, 1057370), (21500, 956551), (24590, 836350), (33454, 614750), (38900, 528685), (48625, 422948), (49180, 418175), (61475, 334540), (66908, 307375), (83635, 245900), (97250, 211474), (105737, 194500), (122950, 167270)]