807820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{239}}^1$

素因数の和:274

約数の個数: 36

約数和(自身を含む): 1844640

約数和(自身を除く): 1036820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 239, 260, 338, 478, 676, 845, 956, 1195, 1690, 2390, 3107, 3380, 4780, 6214, 12428, 15535, 31070, 40391, 62140, 80782, 161564, 201955, 403910, 807820]

約数ペア:

[(1, 807820), (2, 403910), (4, 201955), (5, 161564), (10, 80782), (13, 62140), (20, 40391), (26, 31070), (52, 15535), (65, 12428), (130, 6214), (169, 4780), (239, 3380), (260, 3107), (338, 2390), (478, 1690), (676, 1195), (845, 956)]