1281020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{379}}^1$

素因数の和:414

約数の個数: 36

約数和(自身を含む): 2920680

約数和(自身を除く): 1639660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 379, 676, 758, 845, 1516, 1690, 1895, 3380, 3790, 4927, 7580, 9854, 19708, 24635, 49270, 64051, 98540, 128102, 256204, 320255, 640510, 1281020]

約数ペア:

[(1, 1281020), (2, 640510), (4, 320255), (5, 256204), (10, 128102), (13, 98540), (20, 64051), (26, 49270), (52, 24635), (65, 19708), (130, 9854), (169, 7580), (260, 4927), (338, 3790), (379, 3380), (676, 1895), (758, 1690), (845, 1516)]