20888410

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:295

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22657190

約数列:

[1, 2, 5, 10, 17, 19, 29, 34, 38, 58, 85, 95, 145, 170, 190, 223, 290, 323, 446, 493, 551, 646, 986, 1102, 1115, 1615, 2230, 2465, 2755, 3230, 3791, 4237, 4930, 5510, 6467, 7582, 8474, 9367, 12934, 18734, 18955, 21185, 32335, 37910, 42370, 46835, 64670, 72029, 93670, 109939, 122873, 144058, 219878, 245746, 360145, 549695, 614365, 720290, 1099390, 1228730, 2088841, 4177682, 10444205, 20888410]

約数ペア:

[(1, 20888410), (2, 10444205), (5, 4177682), (10, 2088841), (17, 1228730), (19, 1099390), (29, 720290), (34, 614365), (38, 549695), (58, 360145), (85, 245746), (95, 219878), (145, 144058), (170, 122873), (190, 109939), (223, 93670), (290, 72029), (323, 64670), (446, 46835), (493, 42370), (551, 37910), (646, 32335), (986, 21185), (1102, 18955), (1115, 18734), (1615, 12934), (2230, 9367), (2465, 8474), (2755, 7582), (3230, 6467), (3791, 5510), (4237, 4930)]