20171728100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{373}}^1\times {\mathrm{28463}}^1$

素因数の和:28869

約数の個数: 72

約数和(自身を含む): 46201626240

約数和(自身を除く): 26029898140

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 373, 380, 475, 746, 950, 1492, 1865, 1900, 3730, 7087, 7460, 9325, 14174, 18650, 28348, 28463, 35435, 37300, 56926, 70870, 113852, 141740, 142315, 177175, 284630, 354350, 540797, 569260, 708700, 711575, 1081594, 1423150, 2163188, 2703985, 2846300, 5407970, 10616699, 10815940, 13519925, 21233398, 27039850, 42466796, 53083495, 54079700, 106166990, 201717281, 212333980, 265417475, 403434562, 530834950, 806869124, 1008586405, 1061669900, 2017172810, 4034345620, 5042932025, 10085864050, 20171728100]

約数ペア:

[(1, 20171728100), (2, 10085864050), (4, 5042932025), (5, 4034345620), (10, 2017172810), (19, 1061669900), (20, 1008586405), (25, 806869124), (38, 530834950), (50, 403434562), (76, 265417475), (95, 212333980), (100, 201717281), (190, 106166990), (373, 54079700), (380, 53083495), (475, 42466796), (746, 27039850), (950, 21233398), (1492, 13519925), (1865, 10815940), (1900, 10616699), (3730, 5407970), (7087, 2846300), (7460, 2703985), (9325, 2163188), (14174, 1423150), (18650, 1081594), (28348, 711575), (28463, 708700), (35435, 569260), (37300, 540797), (56926, 354350), (70870, 284630), (113852, 177175), (141740, 142315)]