21950390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{983}}^1$

素因数の和:1037

約数の個数: 64

約数和(自身を含む): 51010560

約数和(自身を除く): 29060170

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 29, 35, 55, 58, 70, 77, 110, 145, 154, 203, 290, 319, 385, 406, 638, 770, 983, 1015, 1595, 1966, 2030, 2233, 3190, 4466, 4915, 6881, 9830, 10813, 11165, 13762, 21626, 22330, 28507, 34405, 54065, 57014, 68810, 75691, 108130, 142535, 151382, 199549, 285070, 313577, 378455, 399098, 627154, 756910, 997745, 1567885, 1995490, 2195039, 3135770, 4390078, 10975195, 21950390]

約数ペア:

[(1, 21950390), (2, 10975195), (5, 4390078), (7, 3135770), (10, 2195039), (11, 1995490), (14, 1567885), (22, 997745), (29, 756910), (35, 627154), (55, 399098), (58, 378455), (70, 313577), (77, 285070), (110, 199549), (145, 151382), (154, 142535), (203, 108130), (290, 75691), (319, 68810), (385, 57014), (406, 54065), (638, 34405), (770, 28507), (983, 22330), (1015, 21626), (1595, 13762), (1966, 11165), (2030, 10813), (2233, 9830), (3190, 6881), (4466, 4915)]