642180721

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{2441}}^1$

素因数の和:2534

約数の個数: 32

約数和(自身を含む): 820512000

約数和(自身を除く): 178331279

約数列:

[1, 7, 13, 49, 59, 91, 343, 413, 637, 767, 2441, 2891, 4459, 5369, 17087, 20237, 31733, 37583, 119609, 144019, 222131, 263081, 837263, 1008133, 1554917, 1872247, 7056931, 10884419, 13105729, 49398517, 91740103, 642180721]

約数ペア:

[(1, 642180721), (7, 91740103), (13, 49398517), (49, 13105729), (59, 10884419), (91, 7056931), (343, 1872247), (413, 1554917), (637, 1008133), (767, 837263), (2441, 263081), (2891, 222131), (4459, 144019), (5369, 119609), (17087, 37583), (20237, 31733)]