19538428

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{4129}}^1$

素因数の和:4166

約数の個数: 36

約数和(自身を含む): 42324240

約数和(自身を除く): 22785812

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 169, 182, 338, 364, 676, 1183, 2366, 4129, 4732, 8258, 16516, 28903, 53677, 57806, 107354, 115612, 214708, 375739, 697801, 751478, 1395602, 1502956, 2791204, 4884607, 9769214, 19538428]

約数ペア:

[(1, 19538428), (2, 9769214), (4, 4884607), (7, 2791204), (13, 1502956), (14, 1395602), (26, 751478), (28, 697801), (52, 375739), (91, 214708), (169, 115612), (182, 107354), (338, 57806), (364, 53677), (676, 28903), (1183, 16516), (2366, 8258), (4129, 4732)]