21000929500

素因数分解:

$2^2\times 5^3\times {\mathrm{89}}^1\times {\mathrm{471931}}^1$

素因数の和:472039

約数の個数: 48

約数和(自身を含む): 46381476960

約数和(自身を除く): 25380547460

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 125, 178, 250, 356, 445, 500, 890, 1780, 2225, 4450, 8900, 11125, 22250, 44500, 471931, 943862, 1887724, 2359655, 4719310, 9438620, 11798275, 23596550, 42001859, 47193100, 58991375, 84003718, 117982750, 168007436, 210009295, 235965500, 420018590, 840037180, 1050046475, 2100092950, 4200185900, 5250232375, 10500464750, 21000929500]

約数ペア:

[(1, 21000929500), (2, 10500464750), (4, 5250232375), (5, 4200185900), (10, 2100092950), (20, 1050046475), (25, 840037180), (50, 420018590), (89, 235965500), (100, 210009295), (125, 168007436), (178, 117982750), (250, 84003718), (356, 58991375), (445, 47193100), (500, 42001859), (890, 23596550), (1780, 11798275), (2225, 9438620), (4450, 4719310), (8900, 2359655), (11125, 1887724), (22250, 943862), (44500, 471931)]