399978990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{23027}}^1$

素因数の和:23233

約数の個数: 48

約数和(自身を含む): 1045379088

約数和(自身を除く): 645400098

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 193, 386, 579, 965, 1158, 1737, 1930, 2895, 3474, 5790, 8685, 17370, 23027, 46054, 69081, 115135, 138162, 207243, 230270, 345405, 414486, 690810, 1036215, 2072430, 4444211, 8888422, 13332633, 22221055, 26665266, 39997899, 44442110, 66663165, 79995798, 133326330, 199989495, 399978990]

約数ペア:

[(1, 399978990), (2, 199989495), (3, 133326330), (5, 79995798), (6, 66663165), (9, 44442110), (10, 39997899), (15, 26665266), (18, 22221055), (30, 13332633), (45, 8888422), (90, 4444211), (193, 2072430), (386, 1036215), (579, 690810), (965, 414486), (1158, 345405), (1737, 230270), (1930, 207243), (2895, 138162), (3474, 115135), (5790, 69081), (8685, 46054), (17370, 23027)]