18939388

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{379}}^1$

素因数の和:458

約数の個数: 36

約数和(自身を含む): 36979320

約数和(自身を除く): 18039932

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 379, 403, 758, 806, 961, 1516, 1612, 1922, 3844, 4927, 9854, 11749, 12493, 19708, 23498, 24986, 46996, 49972, 152737, 305474, 364219, 610948, 728438, 1456876, 4734847, 9469694, 18939388]

約数ペア:

[(1, 18939388), (2, 9469694), (4, 4734847), (13, 1456876), (26, 728438), (31, 610948), (52, 364219), (62, 305474), (124, 152737), (379, 49972), (403, 46996), (758, 24986), (806, 23498), (961, 19708), (1516, 12493), (1612, 11749), (1922, 9854), (3844, 4927)]