87281420

素因数分解:

$2^2\times 5^1\times {\mathrm{967}}^1\times {\mathrm{4513}}^1$

素因数の和:5489

約数の個数: 24

約数和(自身を含む): 183521184

約数和(自身を除く): 96239764

約数列:

[1, 2, 4, 5, 10, 20, 967, 1934, 3868, 4513, 4835, 9026, 9670, 18052, 19340, 22565, 45130, 90260, 4364071, 8728142, 17456284, 21820355, 43640710, 87281420]

約数ペア:

[(1, 87281420), (2, 43640710), (4, 21820355), (5, 17456284), (10, 8728142), (20, 4364071), (967, 90260), (1934, 45130), (3868, 22565), (4513, 19340), (4835, 18052), (9026, 9670)]