389188990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{887}}^1$

素因数の和:1029

約数の個数: 64

約数和(自身を含む): 776822400

約数和(自身を除く): 387633410

約数列:

[1, 2, 5, 10, 17, 29, 34, 58, 85, 89, 145, 170, 178, 290, 445, 493, 887, 890, 986, 1513, 1774, 2465, 2581, 3026, 4435, 4930, 5162, 7565, 8870, 12905, 15079, 15130, 25723, 25810, 30158, 43877, 51446, 75395, 78943, 87754, 128615, 150790, 157886, 219385, 257230, 394715, 437291, 438770, 789430, 874582, 1342031, 2186455, 2289347, 2684062, 4372910, 4578694, 6710155, 11446735, 13420310, 22893470, 38918899, 77837798, 194594495, 389188990]

約数ペア:

[(1, 389188990), (2, 194594495), (5, 77837798), (10, 38918899), (17, 22893470), (29, 13420310), (34, 11446735), (58, 6710155), (85, 4578694), (89, 4372910), (145, 2684062), (170, 2289347), (178, 2186455), (290, 1342031), (445, 874582), (493, 789430), (887, 438770), (890, 437291), (986, 394715), (1513, 257230), (1774, 219385), (2465, 157886), (2581, 150790), (3026, 128615), (4435, 87754), (4930, 78943), (5162, 75395), (7565, 51446), (8870, 43877), (12905, 30158), (15079, 25810), (15130, 25723)]