20293988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2087}}^1$

素因数の和:2132

約数の個数: 48

約数和(自身を含む): 44198784

約数和(自身を除く): 23904796

約数列:

[1, 2, 4, 11, 13, 17, 22, 26, 34, 44, 52, 68, 143, 187, 221, 286, 374, 442, 572, 748, 884, 2087, 2431, 4174, 4862, 8348, 9724, 22957, 27131, 35479, 45914, 54262, 70958, 91828, 108524, 141916, 298441, 390269, 461227, 596882, 780538, 922454, 1193764, 1561076, 1844908, 5073497, 10146994, 20293988]

約数ペア:

[(1, 20293988), (2, 10146994), (4, 5073497), (11, 1844908), (13, 1561076), (17, 1193764), (22, 922454), (26, 780538), (34, 596882), (44, 461227), (52, 390269), (68, 298441), (143, 141916), (187, 108524), (221, 91828), (286, 70958), (374, 54262), (442, 45914), (572, 35479), (748, 27131), (884, 22957), (2087, 9724), (2431, 8348), (4174, 4862)]