20090410

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2579}}^1$

素因数の和:2646

約数の個数: 32

約数和(自身を含む): 39009600

約数和(自身を除く): 18919190

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 2579, 3895, 5158, 7790, 12895, 25790, 49001, 98002, 105739, 211478, 245005, 490010, 528695, 1057390, 2009041, 4018082, 10045205, 20090410]

約数ペア:

[(1, 20090410), (2, 10045205), (5, 4018082), (10, 2009041), (19, 1057390), (38, 528695), (41, 490010), (82, 245005), (95, 211478), (190, 105739), (205, 98002), (410, 49001), (779, 25790), (1558, 12895), (2579, 7790), (3895, 5158)]