278855440

素因数分解:

$2^4\times 5^1\times {\mathrm{1613}}^1\times {\mathrm{2161}}^1$

素因数の和:3787

約数の個数: 40

約数和(自身を含む): 649041048

約数和(自身を除く): 370185608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1613, 2161, 3226, 4322, 6452, 8065, 8644, 10805, 12904, 16130, 17288, 21610, 25808, 32260, 34576, 43220, 64520, 86440, 129040, 172880, 3485693, 6971386, 13942772, 17428465, 27885544, 34856930, 55771088, 69713860, 139427720, 278855440]

約数ペア:

[(1, 278855440), (2, 139427720), (4, 69713860), (5, 55771088), (8, 34856930), (10, 27885544), (16, 17428465), (20, 13942772), (40, 6971386), (80, 3485693), (1613, 172880), (2161, 129040), (3226, 86440), (4322, 64520), (6452, 43220), (8065, 34576), (8644, 32260), (10805, 25808), (12904, 21610), (16130, 17288)]