71322380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{347}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 154344960

約数和(自身を除く): 83022580

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 239, 347, 430, 478, 694, 860, 956, 1195, 1388, 1735, 2390, 3470, 4780, 6940, 10277, 14921, 20554, 29842, 41108, 51385, 59684, 74605, 82933, 102770, 149210, 165866, 205540, 298420, 331732, 414665, 829330, 1658660, 3566119, 7132238, 14264476, 17830595, 35661190, 71322380]

約数ペア:

[(1, 71322380), (2, 35661190), (4, 17830595), (5, 14264476), (10, 7132238), (20, 3566119), (43, 1658660), (86, 829330), (172, 414665), (215, 331732), (239, 298420), (347, 205540), (430, 165866), (478, 149210), (694, 102770), (860, 82933), (956, 74605), (1195, 59684), (1388, 51385), (1735, 41108), (2390, 29842), (3470, 20554), (4780, 14921), (6940, 10277)]