20115705

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{353}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 33644160

約数和(自身を除く): 13528455

約数列:

[1, 3, 5, 15, 29, 87, 131, 145, 353, 393, 435, 655, 1059, 1765, 1965, 3799, 5295, 10237, 11397, 18995, 30711, 46243, 51185, 56985, 138729, 153555, 231215, 693645, 1341047, 4023141, 6705235, 20115705]

約数ペア:

[(1, 20115705), (3, 6705235), (5, 4023141), (15, 1341047), (29, 693645), (87, 231215), (131, 153555), (145, 138729), (353, 56985), (393, 51185), (435, 46243), (655, 30711), (1059, 18995), (1765, 11397), (1965, 10237), (3799, 5295)]