51452680

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:346

約数の個数: 64

約数和(自身を含む): 119070000

約数和(自身を除く): 67617320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 97, 149, 178, 194, 298, 356, 388, 445, 485, 596, 712, 745, 776, 890, 970, 1192, 1490, 1780, 1940, 2980, 3560, 3880, 5960, 8633, 13261, 14453, 17266, 26522, 28906, 34532, 43165, 53044, 57812, 66305, 69064, 72265, 86330, 106088, 115624, 132610, 144530, 172660, 265220, 289060, 345320, 530440, 578120, 1286317, 2572634, 5145268, 6431585, 10290536, 12863170, 25726340, 51452680]

約数ペア:

[(1, 51452680), (2, 25726340), (4, 12863170), (5, 10290536), (8, 6431585), (10, 5145268), (20, 2572634), (40, 1286317), (89, 578120), (97, 530440), (149, 345320), (178, 289060), (194, 265220), (298, 172660), (356, 144530), (388, 132610), (445, 115624), (485, 106088), (596, 86330), (712, 72265), (745, 69064), (776, 66305), (890, 57812), (970, 53044), (1192, 43165), (1490, 34532), (1780, 28906), (1940, 26522), (2980, 17266), (3560, 14453), (3880, 13261), (5960, 8633)]