21857355

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37363}}^1$

素因数の和:37387

約数の個数: 24

約数和(自身を含む): 40801488

約数和(自身を除く): 18944133

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 37363, 112089, 186815, 336267, 485719, 560445, 1457157, 1681335, 2428595, 4371471, 7285785, 21857355]

約数ペア:

[(1, 21857355), (3, 7285785), (5, 4371471), (9, 2428595), (13, 1681335), (15, 1457157), (39, 560445), (45, 485719), (65, 336267), (117, 186815), (195, 112089), (585, 37363)]