20657156780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{733}}^1\times {\mathrm{1013}}^1$

素因数の和:1875

約数の個数: 96

約数和(自身を含む): 47264503104

約数和(自身を除く): 26607346324

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 428, 535, 733, 1013, 1070, 1391, 1466, 2026, 2140, 2782, 2932, 3665, 4052, 5065, 5564, 6955, 7330, 9529, 10130, 13169, 13910, 14660, 19058, 20260, 26338, 27820, 38116, 47645, 52676, 65845, 78431, 95290, 108391, 131690, 156862, 190580, 216782, 263380, 313724, 392155, 433564, 541955, 742529, 784310, 1019603, 1083910, 1409083, 1485058, 1568620, 2039206, 2167820, 2818166, 2970116, 3712645, 4078412, 5098015, 5636332, 7045415, 7425290, 9652877, 10196030, 14090830, 14850580, 19305754, 20392060, 28181660, 38611508, 48264385, 79450603, 96528770, 158901206, 193057540, 317802412, 397253015, 794506030, 1032857839, 1589012060, 2065715678, 4131431356, 5164289195, 10328578390, 20657156780]

約数ペア:

[(1, 20657156780), (2, 10328578390), (4, 5164289195), (5, 4131431356), (10, 2065715678), (13, 1589012060), (20, 1032857839), (26, 794506030), (52, 397253015), (65, 317802412), (107, 193057540), (130, 158901206), (214, 96528770), (260, 79450603), (428, 48264385), (535, 38611508), (733, 28181660), (1013, 20392060), (1070, 19305754), (1391, 14850580), (1466, 14090830), (2026, 10196030), (2140, 9652877), (2782, 7425290), (2932, 7045415), (3665, 5636332), (4052, 5098015), (5065, 4078412), (5564, 3712645), (6955, 2970116), (7330, 2818166), (9529, 2167820), (10130, 2039206), (13169, 1568620), (13910, 1485058), (14660, 1409083), (19058, 1083910), (20260, 1019603), (26338, 784310), (27820, 742529), (38116, 541955), (47645, 433564), (52676, 392155), (65845, 313724), (78431, 263380), (95290, 216782), (108391, 190580), (131690, 156862)]