1388402620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{6310921}}^1$

素因数の和:6310941

約数の個数: 24

約数和(自身を含む): 3180704688

約数和(自身を除く): 1792302068

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 6310921, 12621842, 25243684, 31554605, 63109210, 69420131, 126218420, 138840262, 277680524, 347100655, 694201310, 1388402620]

約数ペア:

[(1, 1388402620), (2, 694201310), (4, 347100655), (5, 277680524), (10, 138840262), (11, 126218420), (20, 69420131), (22, 63109210), (44, 31554605), (55, 25243684), (110, 12621842), (220, 6310921)]