28225990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{7487}}^1$

素因数の和:7536

約数の個数: 32

約数和(自身を含む): 56609280

約数和(自身を除く): 28383290

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 290, 377, 754, 1885, 3770, 7487, 14974, 37435, 74870, 97331, 194662, 217123, 434246, 486655, 973310, 1085615, 2171230, 2822599, 5645198, 14112995, 28225990]

約数ペア:

[(1, 28225990), (2, 14112995), (5, 5645198), (10, 2822599), (13, 2171230), (26, 1085615), (29, 973310), (58, 486655), (65, 434246), (130, 217123), (145, 194662), (290, 97331), (377, 74870), (754, 37435), (1885, 14974), (3770, 7487)]