218510920

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{20771}}^1$

素因数の和:21045

約数の個数: 32

約数和(自身を含む): 493542720

約数和(自身を除く): 275031800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 5260, 10520, 20771, 41542, 83084, 103855, 166168, 207710, 415420, 830840, 5462773, 10925546, 21851092, 27313865, 43702184, 54627730, 109255460, 218510920]

約数ペア:

[(1, 218510920), (2, 109255460), (4, 54627730), (5, 43702184), (8, 27313865), (10, 21851092), (20, 10925546), (40, 5462773), (263, 830840), (526, 415420), (1052, 207710), (1315, 166168), (2104, 103855), (2630, 83084), (5260, 41542), (10520, 20771)]