18907760

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1861}}^1$

素因数の和:2001

約数の個数: 40

約数和(自身を含む): 44330496

約数和(自身を除く): 25422736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 1861, 2032, 2540, 3722, 5080, 7444, 9305, 10160, 14888, 18610, 29776, 37220, 74440, 148880, 236347, 472694, 945388, 1181735, 1890776, 2363470, 3781552, 4726940, 9453880, 18907760]

約数ペア:

[(1, 18907760), (2, 9453880), (4, 4726940), (5, 3781552), (8, 2363470), (10, 1890776), (16, 1181735), (20, 945388), (40, 472694), (80, 236347), (127, 148880), (254, 74440), (508, 37220), (635, 29776), (1016, 18610), (1270, 14888), (1861, 10160), (2032, 9305), (2540, 7444), (3722, 5080)]