20947784

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{18311}}^1$

素因数の和:18341

約数の個数: 32

約数和(自身を含む): 46146240

約数和(自身を除く): 25198456

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 18311, 36622, 73244, 146488, 201421, 238043, 402842, 476086, 805684, 952172, 1611368, 1904344, 2618473, 5236946, 10473892, 20947784]

約数ペア:

[(1, 20947784), (2, 10473892), (4, 5236946), (8, 2618473), (11, 1904344), (13, 1611368), (22, 952172), (26, 805684), (44, 476086), (52, 402842), (88, 238043), (104, 201421), (143, 146488), (286, 73244), (572, 36622), (1144, 18311)]