20739784

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{4243}}^1$

素因数の和:4309

約数の個数: 32

約数和(自身を含む): 42779520

約数和(自身を除く): 22039736

約数列:

[1, 2, 4, 8, 13, 26, 47, 52, 94, 104, 188, 376, 611, 1222, 2444, 4243, 4888, 8486, 16972, 33944, 55159, 110318, 199421, 220636, 398842, 441272, 797684, 1595368, 2592473, 5184946, 10369892, 20739784]

約数ペア:

[(1, 20739784), (2, 10369892), (4, 5184946), (8, 2592473), (13, 1595368), (26, 797684), (47, 441272), (52, 398842), (94, 220636), (104, 199421), (188, 110318), (376, 55159), (611, 33944), (1222, 16972), (2444, 8486), (4243, 4888)]