87654040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128903}}^1$

素因数の和:128931

約数の個数: 32

約数和(自身を含む): 208824480

約数和(自身を除く): 121170440

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 128903, 257806, 515612, 644515, 1031224, 1289030, 2191351, 2578060, 4382702, 5156120, 8765404, 10956755, 17530808, 21913510, 43827020, 87654040]

約数ペア:

[(1, 87654040), (2, 43827020), (4, 21913510), (5, 17530808), (8, 10956755), (10, 8765404), (17, 5156120), (20, 4382702), (34, 2578060), (40, 2191351), (68, 1289030), (85, 1031224), (136, 644515), (170, 515612), (340, 257806), (680, 128903)]