12399320

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1297}}^1$

素因数の和:1547

約数の個数: 32

約数和(自身を含む): 28036800

約数和(自身を除く): 15637480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 478, 956, 1195, 1297, 1912, 2390, 2594, 4780, 5188, 6485, 9560, 10376, 12970, 25940, 51880, 309983, 619966, 1239932, 1549915, 2479864, 3099830, 6199660, 12399320]

約数ペア:

[(1, 12399320), (2, 6199660), (4, 3099830), (5, 2479864), (8, 1549915), (10, 1239932), (20, 619966), (40, 309983), (239, 51880), (478, 25940), (956, 12970), (1195, 10376), (1297, 9560), (1912, 6485), (2390, 5188), (2594, 4780)]