39972321

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{307}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 65729664

約数和(自身を除く): 25757343

約数列:

[1, 3, 9, 17, 23, 37, 51, 69, 111, 153, 207, 307, 333, 391, 629, 851, 921, 1173, 1887, 2553, 2763, 3519, 5219, 5661, 7061, 7659, 11359, 14467, 15657, 21183, 34077, 43401, 46971, 63549, 102231, 120037, 130203, 193103, 261257, 360111, 579309, 783771, 1080333, 1737927, 2351313, 4441369, 13324107, 39972321]

約数ペア:

[(1, 39972321), (3, 13324107), (9, 4441369), (17, 2351313), (23, 1737927), (37, 1080333), (51, 783771), (69, 579309), (111, 360111), (153, 261257), (207, 193103), (307, 130203), (333, 120037), (391, 102231), (629, 63549), (851, 46971), (921, 43401), (1173, 34077), (1887, 21183), (2553, 15657), (2763, 14467), (3519, 11359), (5219, 7659), (5661, 7061)]