215779620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{513761}}^1$

素因数の和:513780

約数の個数: 48

約数和(自身を含む): 690496128

約数和(自身を除く): 474716508

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 513761, 1027522, 1541283, 2055044, 2568805, 3082566, 3596327, 5137610, 6165132, 7192654, 7706415, 10275220, 10788981, 14385308, 15412830, 17981635, 21577962, 30825660, 35963270, 43155924, 53944905, 71926540, 107889810, 215779620]

約数ペア:

[(1, 215779620), (2, 107889810), (3, 71926540), (4, 53944905), (5, 43155924), (6, 35963270), (7, 30825660), (10, 21577962), (12, 17981635), (14, 15412830), (15, 14385308), (20, 10788981), (21, 10275220), (28, 7706415), (30, 7192654), (35, 6165132), (42, 5137610), (60, 3596327), (70, 3082566), (84, 2568805), (105, 2055044), (140, 1541283), (210, 1027522), (420, 513761)]