78501940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{1493}}^1$

素因数の和:1752

約数の個数: 48

約数和(自身を含む): 180714240

約数和(自身を除く): 102212300

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 239, 478, 956, 1195, 1493, 2390, 2629, 2986, 4780, 5258, 5972, 7465, 10516, 13145, 14930, 16423, 26290, 29860, 32846, 52580, 65692, 82115, 164230, 328460, 356827, 713654, 1427308, 1784135, 3568270, 3925097, 7136540, 7850194, 15700388, 19625485, 39250970, 78501940]

約数ペア:

[(1, 78501940), (2, 39250970), (4, 19625485), (5, 15700388), (10, 7850194), (11, 7136540), (20, 3925097), (22, 3568270), (44, 1784135), (55, 1427308), (110, 713654), (220, 356827), (239, 328460), (478, 164230), (956, 82115), (1195, 65692), (1493, 52580), (2390, 32846), (2629, 29860), (2986, 26290), (4780, 16423), (5258, 14930), (5972, 13145), (7465, 10516)]