20167900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{4919}}^1$

素因数の和:4974

約数の個数: 36

約数和(自身を含む): 44840880

約数和(自身を除く): 24672980

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 4919, 9838, 19676, 24595, 49190, 98380, 122975, 201679, 245950, 403358, 491900, 806716, 1008395, 2016790, 4033580, 5041975, 10083950, 20167900]

約数ペア:

[(1, 20167900), (2, 10083950), (4, 5041975), (5, 4033580), (10, 2016790), (20, 1008395), (25, 806716), (41, 491900), (50, 403358), (82, 245950), (100, 201679), (164, 122975), (205, 98380), (410, 49190), (820, 24595), (1025, 19676), (2050, 9838), (4100, 4919)]