20165784940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{383}}^1\times {\mathrm{5297}}^1$

素因数の和:5767

約数の個数: 96

約数和(自身を含む): 49216978944

約数和(自身を除く): 29051194004

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 383, 497, 710, 766, 994, 1420, 1532, 1915, 1988, 2485, 2681, 3830, 4970, 5297, 5362, 7660, 9940, 10594, 10724, 13405, 21188, 26485, 26810, 27193, 37079, 52970, 53620, 54386, 74158, 105940, 108772, 135965, 148316, 185395, 190351, 271930, 370790, 376087, 380702, 543860, 741580, 752174, 761404, 951755, 1504348, 1880435, 1903510, 2028751, 2632609, 3760870, 3807020, 4057502, 5265218, 7521740, 8115004, 10143755, 10530436, 13163045, 14201257, 20287510, 26326090, 28402514, 40575020, 52652180, 56805028, 71006285, 142012570, 144041321, 284025140, 288082642, 576165284, 720206605, 1008289247, 1440413210, 2016578494, 2880826420, 4033156988, 5041446235, 10082892470, 20165784940]

約数ペア:

[(1, 20165784940), (2, 10082892470), (4, 5041446235), (5, 4033156988), (7, 2880826420), (10, 2016578494), (14, 1440413210), (20, 1008289247), (28, 720206605), (35, 576165284), (70, 288082642), (71, 284025140), (140, 144041321), (142, 142012570), (284, 71006285), (355, 56805028), (383, 52652180), (497, 40575020), (710, 28402514), (766, 26326090), (994, 20287510), (1420, 14201257), (1532, 13163045), (1915, 10530436), (1988, 10143755), (2485, 8115004), (2681, 7521740), (3830, 5265218), (4970, 4057502), (5297, 3807020), (5362, 3760870), (7660, 2632609), (9940, 2028751), (10594, 1903510), (10724, 1880435), (13405, 1504348), (21188, 951755), (26485, 761404), (26810, 752174), (27193, 741580), (37079, 543860), (52970, 380702), (53620, 376087), (54386, 370790), (74158, 271930), (105940, 190351), (108772, 185395), (135965, 148316)]