15420280

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1613}}^1$

素因数の和:1863

約数の個数: 32

約数和(自身を含む): 34862400

約数和(自身を除く): 19442120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 478, 956, 1195, 1613, 1912, 2390, 3226, 4780, 6452, 8065, 9560, 12904, 16130, 32260, 64520, 385507, 771014, 1542028, 1927535, 3084056, 3855070, 7710140, 15420280]

約数ペア:

[(1, 15420280), (2, 7710140), (4, 3855070), (5, 3084056), (8, 1927535), (10, 1542028), (20, 771014), (40, 385507), (239, 64520), (478, 32260), (956, 16130), (1195, 12904), (1613, 9560), (1912, 8065), (2390, 6452), (3226, 4780)]