221680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1$

素因数の和:193

約数の個数: 40

約数和(自身を含む): 549072

約数和(自身を除く): 327392

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 163, 170, 272, 326, 340, 652, 680, 815, 1304, 1360, 1630, 2608, 2771, 3260, 5542, 6520, 11084, 13040, 13855, 22168, 27710, 44336, 55420, 110840, 221680]

約数ペア:

[(1, 221680), (2, 110840), (4, 55420), (5, 44336), (8, 27710), (10, 22168), (16, 13855), (17, 13040), (20, 11084), (34, 6520), (40, 5542), (68, 3260), (80, 2771), (85, 2608), (136, 1630), (163, 1360), (170, 1304), (272, 815), (326, 680), (340, 652)]