216804520

素因数分解:

$2^3\times 5^1\times {\mathrm{1201}}^1\times {\mathrm{4513}}^1$

素因数の和:5725

約数の個数: 32

約数和(自身を含む): 488324520

約数和(自身を除く): 271520000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1201, 2402, 4513, 4804, 6005, 9026, 9608, 12010, 18052, 22565, 24020, 36104, 45130, 48040, 90260, 180520, 5420113, 10840226, 21680452, 27100565, 43360904, 54201130, 108402260, 216804520]

約数ペア:

[(1, 216804520), (2, 108402260), (4, 54201130), (5, 43360904), (8, 27100565), (10, 21680452), (20, 10840226), (40, 5420113), (1201, 180520), (2402, 90260), (4513, 48040), (4804, 45130), (6005, 36104), (9026, 24020), (9608, 22565), (12010, 18052)]