20996470

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 44250624

約数和(自身を除く): 23254154

約数列:

[1, 2, 5, 10, 11, 22, 23, 43, 46, 55, 86, 110, 115, 193, 215, 230, 253, 386, 430, 473, 506, 946, 965, 989, 1265, 1930, 1978, 2123, 2365, 2530, 4246, 4439, 4730, 4945, 8299, 8878, 9890, 10615, 10879, 16598, 21230, 21758, 22195, 41495, 44390, 48829, 54395, 82990, 91289, 97658, 108790, 182578, 190877, 244145, 381754, 456445, 488290, 912890, 954385, 1908770, 2099647, 4199294, 10498235, 20996470]

約数ペア:

[(1, 20996470), (2, 10498235), (5, 4199294), (10, 2099647), (11, 1908770), (22, 954385), (23, 912890), (43, 488290), (46, 456445), (55, 381754), (86, 244145), (110, 190877), (115, 182578), (193, 108790), (215, 97658), (230, 91289), (253, 82990), (386, 54395), (430, 48829), (473, 44390), (506, 41495), (946, 22195), (965, 21758), (989, 21230), (1265, 16598), (1930, 10879), (1978, 10615), (2123, 9890), (2365, 8878), (2530, 8299), (4246, 4945), (4439, 4730)]