19917686

素因数分解:

$2^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:348

約数の個数: 24

約数和(自身を含む): 31720392

約数和(自身を除く): 11802706

約数列:

[1, 2, 31, 43, 62, 86, 241, 482, 961, 1333, 1922, 2666, 7471, 10363, 14942, 20726, 41323, 82646, 231601, 321253, 463202, 642506, 9958843, 19917686]

約数ペア:

[(1, 19917686), (2, 9958843), (31, 642506), (43, 463202), (62, 321253), (86, 231601), (241, 82646), (482, 41323), (961, 20726), (1333, 14942), (1922, 10363), (2666, 7471)]