80707040

素因数分解:

$2^5\times 5^1\times {\mathrm{509}}^1\times {\mathrm{991}}^1$

素因数の和:1515

約数の個数: 48

約数和(自身を含む): 191237760

約数和(自身を除く): 110530720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 509, 991, 1018, 1982, 2036, 2545, 3964, 4072, 4955, 5090, 7928, 8144, 9910, 10180, 15856, 16288, 19820, 20360, 31712, 39640, 40720, 79280, 81440, 158560, 504419, 1008838, 2017676, 2522095, 4035352, 5044190, 8070704, 10088380, 16141408, 20176760, 40353520, 80707040]

約数ペア:

[(1, 80707040), (2, 40353520), (4, 20176760), (5, 16141408), (8, 10088380), (10, 8070704), (16, 5044190), (20, 4035352), (32, 2522095), (40, 2017676), (80, 1008838), (160, 504419), (509, 158560), (991, 81440), (1018, 79280), (1982, 40720), (2036, 39640), (2545, 31712), (3964, 20360), (4072, 19820), (4955, 16288), (5090, 15856), (7928, 10180), (8144, 9910)]