208380201620

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{191}}^2\times {\mathrm{3209}}^1$

素因数の和:3689

約数の個数: 72

約数和(自身を含む): 444982847400

約数和(自身を除く): 236602645780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 191, 356, 382, 445, 764, 890, 955, 1780, 1910, 3209, 3820, 6418, 12836, 16045, 16999, 32090, 33998, 36481, 64180, 67996, 72962, 84995, 145924, 169990, 182405, 285601, 339980, 364810, 571202, 612919, 729620, 1142404, 1225838, 1428005, 2451676, 2856010, 3064595, 3246809, 5712020, 6129190, 6493618, 12258380, 12987236, 16234045, 32468090, 54549791, 64936180, 109099582, 117067529, 218199164, 234135058, 272748955, 468270116, 545497910, 585337645, 1090995820, 1170675290, 2341350580, 10419010081, 20838020162, 41676040324, 52095050405, 104190100810, 208380201620]

約数ペア:

[(1, 208380201620), (2, 104190100810), (4, 52095050405), (5, 41676040324), (10, 20838020162), (20, 10419010081), (89, 2341350580), (178, 1170675290), (191, 1090995820), (356, 585337645), (382, 545497910), (445, 468270116), (764, 272748955), (890, 234135058), (955, 218199164), (1780, 117067529), (1910, 109099582), (3209, 64936180), (3820, 54549791), (6418, 32468090), (12836, 16234045), (16045, 12987236), (16999, 12258380), (32090, 6493618), (33998, 6129190), (36481, 5712020), (64180, 3246809), (67996, 3064595), (72962, 2856010), (84995, 2451676), (145924, 1428005), (169990, 1225838), (182405, 1142404), (285601, 729620), (339980, 612919), (364810, 571202)]