66139390

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1\times {\mathrm{409}}^1$

素因数の和:676

約数の個数: 32

約数和(自身を含む): 121268160

約数和(自身を除く): 55128770

約数列:

[1, 2, 5, 10, 103, 157, 206, 314, 409, 515, 785, 818, 1030, 1570, 2045, 4090, 16171, 32342, 42127, 64213, 80855, 84254, 128426, 161710, 210635, 321065, 421270, 642130, 6613939, 13227878, 33069695, 66139390]

約数ペア:

[(1, 66139390), (2, 33069695), (5, 13227878), (10, 6613939), (103, 642130), (157, 421270), (206, 321065), (314, 210635), (409, 161710), (515, 128426), (785, 84254), (818, 80855), (1030, 64213), (1570, 42127), (2045, 32342), (4090, 16171)]