21000391698

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{661513}}^1$

素因数の和:661579

約数の個数: 64

約数和(自身を含む): 50677264512

約数和(自身を除く): 29676872814

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 37, 39, 66, 74, 78, 111, 143, 222, 286, 407, 429, 481, 814, 858, 962, 1221, 1443, 2442, 2886, 5291, 10582, 15873, 31746, 661513, 1323026, 1984539, 3969078, 7276643, 8599669, 14553286, 17199338, 21829929, 24475981, 25799007, 43659858, 48951962, 51598014, 73427943, 94596359, 146855886, 189192718, 269235791, 283789077, 318187753, 538471582, 567578154, 636375506, 807707373, 954563259, 1615414746, 1909126518, 3500065283, 7000130566, 10500195849, 21000391698]

約数ペア:

[(1, 21000391698), (2, 10500195849), (3, 7000130566), (6, 3500065283), (11, 1909126518), (13, 1615414746), (22, 954563259), (26, 807707373), (33, 636375506), (37, 567578154), (39, 538471582), (66, 318187753), (74, 283789077), (78, 269235791), (111, 189192718), (143, 146855886), (222, 94596359), (286, 73427943), (407, 51598014), (429, 48951962), (481, 43659858), (814, 25799007), (858, 24475981), (962, 21829929), (1221, 17199338), (1443, 14553286), (2442, 8599669), (2886, 7276643), (5291, 3969078), (10582, 1984539), (15873, 1323026), (31746, 661513)]