21516170

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1$

素因数の和:351

約数の個数: 64

約数和(自身を含む): 45480960

約数和(自身を除く): 23964790

約数列:

[1, 2, 5, 10, 13, 19, 26, 31, 38, 62, 65, 95, 130, 155, 190, 247, 281, 310, 403, 494, 562, 589, 806, 1178, 1235, 1405, 2015, 2470, 2810, 2945, 3653, 4030, 5339, 5890, 7306, 7657, 8711, 10678, 15314, 17422, 18265, 26695, 36530, 38285, 43555, 53390, 69407, 76570, 87110, 113243, 138814, 165509, 226486, 331018, 347035, 566215, 694070, 827545, 1132430, 1655090, 2151617, 4303234, 10758085, 21516170]

約数ペア:

[(1, 21516170), (2, 10758085), (5, 4303234), (10, 2151617), (13, 1655090), (19, 1132430), (26, 827545), (31, 694070), (38, 566215), (62, 347035), (65, 331018), (95, 226486), (130, 165509), (155, 138814), (190, 113243), (247, 87110), (281, 76570), (310, 69407), (403, 53390), (494, 43555), (562, 38285), (589, 36530), (806, 26695), (1178, 18265), (1235, 17422), (1405, 15314), (2015, 10678), (2470, 8711), (2810, 7657), (2945, 7306), (3653, 5890), (4030, 5339)]