28860560

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{21221}}^1$

素因数の和:21251

約数の個数: 40

約数和(自身を含む): 71051256

約数和(自身を除く): 42190696

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 21221, 42442, 84884, 106105, 169768, 212210, 339536, 360757, 424420, 721514, 848840, 1443028, 1697680, 1803785, 2886056, 3607570, 5772112, 7215140, 14430280, 28860560]

約数ペア:

[(1, 28860560), (2, 14430280), (4, 7215140), (5, 5772112), (8, 3607570), (10, 2886056), (16, 1803785), (17, 1697680), (20, 1443028), (34, 848840), (40, 721514), (68, 424420), (80, 360757), (85, 339536), (136, 212210), (170, 169768), (272, 106105), (340, 84884), (680, 42442), (1360, 21221)]