20748988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{21001}}^1$

素因数の和:21037

約数の個数: 24

約数和(自身を含む): 41163920

約数和(自身を除く): 20414932

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 21001, 42002, 84004, 273013, 399019, 546026, 798038, 1092052, 1596076, 5187247, 10374494, 20748988]

約数ペア:

[(1, 20748988), (2, 10374494), (4, 5187247), (13, 1596076), (19, 1092052), (26, 798038), (38, 546026), (52, 399019), (76, 273013), (247, 84004), (494, 42002), (988, 21001)]