20831535

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 37889280

約数和(自身を除く): 17057745

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 109, 137, 155, 279, 327, 411, 465, 545, 685, 981, 1233, 1395, 1635, 2055, 3379, 4247, 4905, 6165, 10137, 12741, 14933, 16895, 21235, 30411, 38223, 44799, 50685, 63705, 74665, 134397, 152055, 191115, 223995, 462923, 671985, 1388769, 2314615, 4166307, 6943845, 20831535]

約数ペア:

[(1, 20831535), (3, 6943845), (5, 4166307), (9, 2314615), (15, 1388769), (31, 671985), (45, 462923), (93, 223995), (109, 191115), (137, 152055), (155, 134397), (279, 74665), (327, 63705), (411, 50685), (465, 44799), (545, 38223), (685, 30411), (981, 21235), (1233, 16895), (1395, 14933), (1635, 12741), (2055, 10137), (3379, 6165), (4247, 4905)]