211017891

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{2207}}^1$

素因数の和:2403

約数の個数: 32

約数和(自身を含む): 334909440

約数和(自身を除く): 123891549

約数列:

[1, 3, 7, 21, 29, 87, 157, 203, 471, 609, 1099, 2207, 3297, 4553, 6621, 13659, 15449, 31871, 46347, 64003, 95613, 192009, 346499, 448021, 1039497, 1344063, 2425493, 7276479, 10048471, 30145413, 70339297, 211017891]

約数ペア:

[(1, 211017891), (3, 70339297), (7, 30145413), (21, 10048471), (29, 7276479), (87, 2425493), (157, 1344063), (203, 1039497), (471, 448021), (609, 346499), (1099, 192009), (2207, 95613), (3297, 64003), (4553, 46347), (6621, 31871), (13659, 15449)]