20282860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{431}}^1$

素因数の和:634

約数の個数: 48

約数和(自身を含む): 46230912

約数和(自身を除く): 25948052

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 181, 260, 362, 431, 724, 862, 905, 1724, 1810, 2155, 2353, 3620, 4310, 4706, 5603, 8620, 9412, 11206, 11765, 22412, 23530, 28015, 47060, 56030, 78011, 112060, 156022, 312044, 390055, 780110, 1014143, 1560220, 2028286, 4056572, 5070715, 10141430, 20282860]

約数ペア:

[(1, 20282860), (2, 10141430), (4, 5070715), (5, 4056572), (10, 2028286), (13, 1560220), (20, 1014143), (26, 780110), (52, 390055), (65, 312044), (130, 156022), (181, 112060), (260, 78011), (362, 56030), (431, 47060), (724, 28015), (862, 23530), (905, 22412), (1724, 11765), (1810, 11206), (2155, 9412), (2353, 8620), (3620, 5603), (4310, 4706)]