20164784

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{521}}^1$

素因数の和:629

約数の個数: 40

約数和(自身を含む): 40778640

約数和(自身を除く): 20613856

約数列:

[1, 2, 4, 8, 16, 41, 59, 82, 118, 164, 236, 328, 472, 521, 656, 944, 1042, 2084, 2419, 4168, 4838, 8336, 9676, 19352, 21361, 30739, 38704, 42722, 61478, 85444, 122956, 170888, 245912, 341776, 491824, 1260299, 2520598, 5041196, 10082392, 20164784]

約数ペア:

[(1, 20164784), (2, 10082392), (4, 5041196), (8, 2520598), (16, 1260299), (41, 491824), (59, 341776), (82, 245912), (118, 170888), (164, 122956), (236, 85444), (328, 61478), (472, 42722), (521, 38704), (656, 30739), (944, 21361), (1042, 19352), (2084, 9676), (2419, 8336), (4168, 4838)]