20476240

素因数分解:

$2^4\times 5^1\times {\mathrm{311}}^1\times {\mathrm{823}}^1$

素因数の和:1147

約数の個数: 40

約数和(自身を含む): 47818368

約数和(自身を除く): 27342128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 311, 622, 823, 1244, 1555, 1646, 2488, 3110, 3292, 4115, 4976, 6220, 6584, 8230, 12440, 13168, 16460, 24880, 32920, 65840, 255953, 511906, 1023812, 1279765, 2047624, 2559530, 4095248, 5119060, 10238120, 20476240]

約数ペア:

[(1, 20476240), (2, 10238120), (4, 5119060), (5, 4095248), (8, 2559530), (10, 2047624), (16, 1279765), (20, 1023812), (40, 511906), (80, 255953), (311, 65840), (622, 32920), (823, 24880), (1244, 16460), (1555, 13168), (1646, 12440), (2488, 8230), (3110, 6584), (3292, 6220), (4115, 4976)]