20780880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86587}}^1$

素因数の和:86603

約数の個数: 40

約数和(自身を含む): 64421472

約数和(自身を除く): 43640592

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86587, 173174, 259761, 346348, 432935, 519522, 692696, 865870, 1039044, 1298805, 1385392, 1731740, 2078088, 2597610, 3463480, 4156176, 5195220, 6926960, 10390440, 20780880]

約数ペア:

[(1, 20780880), (2, 10390440), (3, 6926960), (4, 5195220), (5, 4156176), (6, 3463480), (8, 2597610), (10, 2078088), (12, 1731740), (15, 1385392), (16, 1298805), (20, 1039044), (24, 865870), (30, 692696), (40, 519522), (48, 432935), (60, 346348), (80, 259761), (120, 173174), (240, 86587)]