20571304

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{887}}^1$

素因数の和:1129

約数の個数: 32

約数和(自身を含む): 41771520

約数和(自身を除く): 21200216

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 223, 446, 887, 892, 1774, 1784, 2899, 3548, 5798, 7096, 11531, 11596, 23062, 23192, 46124, 92248, 197801, 395602, 791204, 1582408, 2571413, 5142826, 10285652, 20571304]

約数ペア:

[(1, 20571304), (2, 10285652), (4, 5142826), (8, 2571413), (13, 1582408), (26, 791204), (52, 395602), (104, 197801), (223, 92248), (446, 46124), (887, 23192), (892, 23062), (1774, 11596), (1784, 11531), (2899, 7096), (3548, 5798)]