21730904

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{937}}^1$

素因数の和:1179

約数の個数: 32

約数和(自身を含む): 44123520

約数和(自身を除く): 22392616

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 223, 446, 892, 937, 1784, 1874, 2899, 3748, 5798, 7496, 11596, 12181, 23192, 24362, 48724, 97448, 208951, 417902, 835804, 1671608, 2716363, 5432726, 10865452, 21730904]

約数ペア:

[(1, 21730904), (2, 10865452), (4, 5432726), (8, 2716363), (13, 1671608), (26, 835804), (52, 417902), (104, 208951), (223, 97448), (446, 48724), (892, 24362), (937, 23192), (1784, 12181), (1874, 11596), (2899, 7496), (3748, 5798)]