30981320

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{4327}}^1$

素因数の和:4517

約数の個数: 32

約数和(自身を含む): 70113600

約数和(自身を除く): 39132280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 3580, 4327, 7160, 8654, 17308, 21635, 34616, 43270, 86540, 173080, 774533, 1549066, 3098132, 3872665, 6196264, 7745330, 15490660, 30981320]

約数ペア:

[(1, 30981320), (2, 15490660), (4, 7745330), (5, 6196264), (8, 3872665), (10, 3098132), (20, 1549066), (40, 774533), (179, 173080), (358, 86540), (716, 43270), (895, 34616), (1432, 21635), (1790, 17308), (3580, 8654), (4327, 7160)]