31860280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19427}}^1$

素因数の和:19479

約数の個数: 32

約数和(自身を含む): 73437840

約数和(自身を除く): 41577560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 19427, 38854, 77708, 97135, 155416, 194270, 388540, 777080, 796507, 1593014, 3186028, 3982535, 6372056, 7965070, 15930140, 31860280]

約数ペア:

[(1, 31860280), (2, 15930140), (4, 7965070), (5, 6372056), (8, 3982535), (10, 3186028), (20, 1593014), (40, 796507), (41, 777080), (82, 388540), (164, 194270), (205, 155416), (328, 97135), (410, 77708), (820, 38854), (1640, 19427)]