863844220

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1\times {\mathrm{3361}}^1$

素因数の和:3622

約数の個数: 48

約数和(自身を含む): 1850337216

約数和(自身を除く): 986492996

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 181, 284, 355, 362, 710, 724, 905, 1420, 1810, 3361, 3620, 6722, 12851, 13444, 16805, 25702, 33610, 51404, 64255, 67220, 128510, 238631, 257020, 477262, 608341, 954524, 1193155, 1216682, 2386310, 2433364, 3041705, 4772620, 6083410, 12166820, 43192211, 86384422, 172768844, 215961055, 431922110, 863844220]

約数ペア:

[(1, 863844220), (2, 431922110), (4, 215961055), (5, 172768844), (10, 86384422), (20, 43192211), (71, 12166820), (142, 6083410), (181, 4772620), (284, 3041705), (355, 2433364), (362, 2386310), (710, 1216682), (724, 1193155), (905, 954524), (1420, 608341), (1810, 477262), (3361, 257020), (3620, 238631), (6722, 128510), (12851, 67220), (13444, 64255), (16805, 51404), (25702, 33610)]