18657964

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{1609}}^1$

素因数の和:1849

約数の個数: 24

約数和(自身を含む): 35342720

約数和(自身を除く): 16684756

約数列:

[1, 2, 4, 13, 26, 52, 223, 446, 892, 1609, 2899, 3218, 5798, 6436, 11596, 20917, 41834, 83668, 358807, 717614, 1435228, 4664491, 9328982, 18657964]

約数ペア:

[(1, 18657964), (2, 9328982), (4, 4664491), (13, 1435228), (26, 717614), (52, 358807), (223, 83668), (446, 41834), (892, 20917), (1609, 11596), (2899, 6436), (3218, 5798)]