21710620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{433}}^1$

素因数の和:574

約数の個数: 48

約数和(自身を含む): 48121920

約数和(自身を除く): 26411300

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 109, 115, 218, 230, 433, 436, 460, 545, 866, 1090, 1732, 2165, 2180, 2507, 4330, 5014, 8660, 9959, 10028, 12535, 19918, 25070, 39836, 47197, 49795, 50140, 94394, 99590, 188788, 199180, 235985, 471970, 943940, 1085531, 2171062, 4342124, 5427655, 10855310, 21710620]

約数ペア:

[(1, 21710620), (2, 10855310), (4, 5427655), (5, 4342124), (10, 2171062), (20, 1085531), (23, 943940), (46, 471970), (92, 235985), (109, 199180), (115, 188788), (218, 99590), (230, 94394), (433, 50140), (436, 49795), (460, 47197), (545, 39836), (866, 25070), (1090, 19918), (1732, 12535), (2165, 10028), (2180, 9959), (2507, 8660), (4330, 5014)]