21092651600

素因数分解:

$2^4\times 5^2\times {\mathrm{71}}^1\times {\mathrm{742699}}^1$

素因数の和:742788

約数の個数: 60

約数和(自身を含む): 51388898400

約数和(自身を除く): 30296246800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 71, 80, 100, 142, 200, 284, 355, 400, 568, 710, 1136, 1420, 1775, 2840, 3550, 5680, 7100, 14200, 28400, 742699, 1485398, 2970796, 3713495, 5941592, 7426990, 11883184, 14853980, 18567475, 29707960, 37134950, 52731629, 59415920, 74269900, 105463258, 148539800, 210926516, 263658145, 297079600, 421853032, 527316290, 843706064, 1054632580, 1318290725, 2109265160, 2636581450, 4218530320, 5273162900, 10546325800, 21092651600]

約数ペア:

[(1, 21092651600), (2, 10546325800), (4, 5273162900), (5, 4218530320), (8, 2636581450), (10, 2109265160), (16, 1318290725), (20, 1054632580), (25, 843706064), (40, 527316290), (50, 421853032), (71, 297079600), (80, 263658145), (100, 210926516), (142, 148539800), (200, 105463258), (284, 74269900), (355, 59415920), (400, 52731629), (568, 37134950), (710, 29707960), (1136, 18567475), (1420, 14853980), (1775, 11883184), (2840, 7426990), (3550, 5941592), (5680, 3713495), (7100, 2970796), (14200, 1485398), (28400, 742699)]