20968856

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:192

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 23095144

約数列:

[1, 2, 4, 8, 19, 29, 38, 58, 67, 71, 76, 116, 134, 142, 152, 232, 268, 284, 536, 551, 568, 1102, 1273, 1349, 1943, 2059, 2204, 2546, 2698, 3886, 4118, 4408, 4757, 5092, 5396, 7772, 8236, 9514, 10184, 10792, 15544, 16472, 19028, 36917, 38056, 39121, 73834, 78242, 90383, 137953, 147668, 156484, 180766, 275906, 295336, 312968, 361532, 551812, 723064, 1103624, 2621107, 5242214, 10484428, 20968856]

約数ペア:

[(1, 20968856), (2, 10484428), (4, 5242214), (8, 2621107), (19, 1103624), (29, 723064), (38, 551812), (58, 361532), (67, 312968), (71, 295336), (76, 275906), (116, 180766), (134, 156484), (142, 147668), (152, 137953), (232, 90383), (268, 78242), (284, 73834), (536, 39121), (551, 38056), (568, 36917), (1102, 19028), (1273, 16472), (1349, 15544), (1943, 10792), (2059, 10184), (2204, 9514), (2546, 8236), (2698, 7772), (3886, 5396), (4118, 5092), (4408, 4757)]