21077450

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:347

約数の個数: 48

約数和(自身を含む): 42044184

約数和(自身を除く): 20966734

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 137, 170, 181, 274, 362, 425, 685, 850, 905, 1370, 1810, 2329, 3077, 3425, 4525, 4658, 6154, 6850, 9050, 11645, 15385, 23290, 24797, 30770, 49594, 58225, 76925, 116450, 123985, 153850, 247970, 421549, 619925, 843098, 1239850, 2107745, 4215490, 10538725, 21077450]

約数ペア:

[(1, 21077450), (2, 10538725), (5, 4215490), (10, 2107745), (17, 1239850), (25, 843098), (34, 619925), (50, 421549), (85, 247970), (137, 153850), (170, 123985), (181, 116450), (274, 76925), (362, 58225), (425, 49594), (685, 30770), (850, 24797), (905, 23290), (1370, 15385), (1810, 11645), (2329, 9050), (3077, 6850), (3425, 6154), (4525, 4658)]