18836860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{857}}^1$

素因数の和:1030

約数の個数: 48

約数和(自身を含む): 45549504

約数和(自身を除く): 26712644

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 857, 1099, 1570, 1714, 2198, 3140, 3428, 4285, 4396, 5495, 5999, 8570, 10990, 11998, 17140, 21980, 23996, 29995, 59990, 119980, 134549, 269098, 538196, 672745, 941843, 1345490, 1883686, 2690980, 3767372, 4709215, 9418430, 18836860]

約数ペア:

[(1, 18836860), (2, 9418430), (4, 4709215), (5, 3767372), (7, 2690980), (10, 1883686), (14, 1345490), (20, 941843), (28, 672745), (35, 538196), (70, 269098), (140, 134549), (157, 119980), (314, 59990), (628, 29995), (785, 23996), (857, 21980), (1099, 17140), (1570, 11998), (1714, 10990), (2198, 8570), (3140, 5999), (3428, 5495), (4285, 4396)]