209611971

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{983}}^1$

素因数の和:1080

約数の個数: 48

約数和(自身を含む): 337708800

約数和(自身を除く): 128096829

約数列:

[1, 3, 9, 19, 29, 43, 57, 87, 129, 171, 261, 387, 551, 817, 983, 1247, 1653, 2451, 2949, 3741, 4959, 7353, 8847, 11223, 18677, 23693, 28507, 42269, 56031, 71079, 85521, 126807, 168093, 213237, 256563, 380421, 541633, 803111, 1225801, 1624899, 2409333, 3677403, 4874697, 7227999, 11032209, 23290219, 69870657, 209611971]

約数ペア:

[(1, 209611971), (3, 69870657), (9, 23290219), (19, 11032209), (29, 7227999), (43, 4874697), (57, 3677403), (87, 2409333), (129, 1624899), (171, 1225801), (261, 803111), (387, 541633), (551, 380421), (817, 256563), (983, 213237), (1247, 168093), (1653, 126807), (2451, 85521), (2949, 71079), (3741, 56031), (4959, 42269), (7353, 28507), (8847, 23693), (11223, 18677)]