138895720

素因数分解:

$2^3\times 5^1\times {\mathrm{631}}^1\times {\mathrm{5503}}^1$

素因数の和:6145

約数の個数: 32

約数和(自身を含む): 313067520

約数和(自身を除く): 174171800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 631, 1262, 2524, 3155, 5048, 5503, 6310, 11006, 12620, 22012, 25240, 27515, 44024, 55030, 110060, 220120, 3472393, 6944786, 13889572, 17361965, 27779144, 34723930, 69447860, 138895720]

約数ペア:

[(1, 138895720), (2, 69447860), (4, 34723930), (5, 27779144), (8, 17361965), (10, 13889572), (20, 6944786), (40, 3472393), (631, 220120), (1262, 110060), (2524, 55030), (3155, 44024), (5048, 27515), (5503, 25240), (6310, 22012), (11006, 12620)]