18860590

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{631}}^1$

素因数の和:713

約数の個数: 48

約数和(自身を含む): 40202784

約数和(自身を除く): 21342194

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 61, 70, 98, 122, 245, 305, 427, 490, 610, 631, 854, 1262, 2135, 2989, 3155, 4270, 4417, 5978, 6310, 8834, 14945, 22085, 29890, 30919, 38491, 44170, 61838, 76982, 154595, 192455, 269437, 309190, 384910, 538874, 1347185, 1886059, 2694370, 3772118, 9430295, 18860590]

約数ペア:

[(1, 18860590), (2, 9430295), (5, 3772118), (7, 2694370), (10, 1886059), (14, 1347185), (35, 538874), (49, 384910), (61, 309190), (70, 269437), (98, 192455), (122, 154595), (245, 76982), (305, 61838), (427, 44170), (490, 38491), (610, 30919), (631, 29890), (854, 22085), (1262, 14945), (2135, 8834), (2989, 6310), (3155, 5978), (4270, 4417)]