21047700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{4127}}^1$

素因数の和:4161

約数の個数: 72

約数和(自身を含む): 64495872

約数和(自身を除く): 43448172

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 25, 30, 34, 50, 51, 60, 68, 75, 85, 100, 102, 150, 170, 204, 255, 300, 340, 425, 510, 850, 1020, 1275, 1700, 2550, 4127, 5100, 8254, 12381, 16508, 20635, 24762, 41270, 49524, 61905, 70159, 82540, 103175, 123810, 140318, 206350, 210477, 247620, 280636, 309525, 350795, 412700, 420954, 619050, 701590, 841908, 1052385, 1238100, 1403180, 1753975, 2104770, 3507950, 4209540, 5261925, 7015900, 10523850, 21047700]

約数ペア:

[(1, 21047700), (2, 10523850), (3, 7015900), (4, 5261925), (5, 4209540), (6, 3507950), (10, 2104770), (12, 1753975), (15, 1403180), (17, 1238100), (20, 1052385), (25, 841908), (30, 701590), (34, 619050), (50, 420954), (51, 412700), (60, 350795), (68, 309525), (75, 280636), (85, 247620), (100, 210477), (102, 206350), (150, 140318), (170, 123810), (204, 103175), (255, 82540), (300, 70159), (340, 61905), (425, 49524), (510, 41270), (850, 24762), (1020, 20635), (1275, 16508), (1700, 12381), (2550, 8254), (4127, 5100)]