161590180

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{3947}}^1$

素因数の和:4068

約数の個数: 48

約数和(自身を含む): 358162560

約数和(自身を除く): 196572380

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 89, 92, 115, 178, 230, 356, 445, 460, 890, 1780, 2047, 3947, 4094, 7894, 8188, 10235, 15788, 19735, 20470, 39470, 40940, 78940, 90781, 181562, 351283, 363124, 453905, 702566, 907810, 1405132, 1756415, 1815620, 3512830, 7025660, 8079509, 16159018, 32318036, 40397545, 80795090, 161590180]

約数ペア:

[(1, 161590180), (2, 80795090), (4, 40397545), (5, 32318036), (10, 16159018), (20, 8079509), (23, 7025660), (46, 3512830), (89, 1815620), (92, 1756415), (115, 1405132), (178, 907810), (230, 702566), (356, 453905), (445, 363124), (460, 351283), (890, 181562), (1780, 90781), (2047, 78940), (3947, 40940), (4094, 39470), (7894, 20470), (8188, 19735), (10235, 15788)]