20438406

素因数分解:

$2^1\times 3^4\times {\mathrm{79}}^1\times {\mathrm{1597}}^1$

素因数の和:1690

約数の個数: 40

約数和(自身を含む): 46405920

約数和(自身を除く): 25967514

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 79, 81, 158, 162, 237, 474, 711, 1422, 1597, 2133, 3194, 4266, 4791, 6399, 9582, 12798, 14373, 28746, 43119, 86238, 126163, 129357, 252326, 258714, 378489, 756978, 1135467, 2270934, 3406401, 6812802, 10219203, 20438406]

約数ペア:

[(1, 20438406), (2, 10219203), (3, 6812802), (6, 3406401), (9, 2270934), (18, 1135467), (27, 756978), (54, 378489), (79, 258714), (81, 252326), (158, 129357), (162, 126163), (237, 86238), (474, 43119), (711, 28746), (1422, 14373), (1597, 12798), (2133, 9582), (3194, 6399), (4266, 4791)]