20204470

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:301

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 23341130

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 71, 110, 130, 142, 143, 199, 286, 355, 398, 710, 715, 781, 923, 995, 1430, 1562, 1846, 1990, 2189, 2587, 3905, 4378, 4615, 5174, 7810, 9230, 10153, 10945, 12935, 14129, 20306, 21890, 25870, 28258, 28457, 50765, 56914, 70645, 101530, 141290, 142285, 155419, 183677, 284570, 310838, 367354, 777095, 918385, 1554190, 1836770, 2020447, 4040894, 10102235, 20204470]

約数ペア:

[(1, 20204470), (2, 10102235), (5, 4040894), (10, 2020447), (11, 1836770), (13, 1554190), (22, 918385), (26, 777095), (55, 367354), (65, 310838), (71, 284570), (110, 183677), (130, 155419), (142, 142285), (143, 141290), (199, 101530), (286, 70645), (355, 56914), (398, 50765), (710, 28457), (715, 28258), (781, 25870), (923, 21890), (995, 20306), (1430, 14129), (1562, 12935), (1846, 10945), (1990, 10153), (2189, 9230), (2587, 7810), (3905, 5174), (4378, 4615)]