20831640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{2591}}^1$

素因数の和:2672

約数の個数: 64

約数和(自身を含む): 63452160

約数和(自身を除く): 42620520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 67, 120, 134, 201, 268, 335, 402, 536, 670, 804, 1005, 1340, 1608, 2010, 2591, 2680, 4020, 5182, 7773, 8040, 10364, 12955, 15546, 20728, 25910, 31092, 38865, 51820, 62184, 77730, 103640, 155460, 173597, 310920, 347194, 520791, 694388, 867985, 1041582, 1388776, 1735970, 2083164, 2603955, 3471940, 4166328, 5207910, 6943880, 10415820, 20831640]

約数ペア:

[(1, 20831640), (2, 10415820), (3, 6943880), (4, 5207910), (5, 4166328), (6, 3471940), (8, 2603955), (10, 2083164), (12, 1735970), (15, 1388776), (20, 1041582), (24, 867985), (30, 694388), (40, 520791), (60, 347194), (67, 310920), (120, 173597), (134, 155460), (201, 103640), (268, 77730), (335, 62184), (402, 51820), (536, 38865), (670, 31092), (804, 25910), (1005, 20728), (1340, 15546), (1608, 12955), (2010, 10364), (2591, 8040), (2680, 7773), (4020, 5182)]