30311990

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{449}}^1$

素因数の和:656

約数の個数: 32

約数和(自身を含む): 56311200

約数和(自身を除く): 25999210

約数列:

[1, 2, 5, 10, 43, 86, 157, 215, 314, 430, 449, 785, 898, 1570, 2245, 4490, 6751, 13502, 19307, 33755, 38614, 67510, 70493, 96535, 140986, 193070, 352465, 704930, 3031199, 6062398, 15155995, 30311990]

約数ペア:

[(1, 30311990), (2, 15155995), (5, 6062398), (10, 3031199), (43, 704930), (86, 352465), (157, 193070), (215, 140986), (314, 96535), (430, 70493), (449, 67510), (785, 38614), (898, 33755), (1570, 19307), (2245, 13502), (4490, 6751)]