21083426

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1$

素因数の和:128

約数の個数: 72

約数和(自身を含む): 42558480

約数和(自身を除く): 21475054

約数列:

[1, 2, 7, 13, 14, 19, 26, 38, 49, 67, 91, 98, 133, 134, 169, 182, 247, 266, 338, 469, 494, 637, 871, 931, 938, 1183, 1273, 1274, 1729, 1742, 1862, 2366, 2546, 3211, 3283, 3458, 6097, 6422, 6566, 8281, 8911, 11323, 12103, 12194, 16549, 16562, 17822, 22477, 22646, 24206, 33098, 42679, 44954, 62377, 79261, 85358, 115843, 124754, 157339, 158522, 215137, 231686, 314678, 430274, 554827, 810901, 1109654, 1505959, 1621802, 3011918, 10541713, 21083426]

約数ペア:

[(1, 21083426), (2, 10541713), (7, 3011918), (13, 1621802), (14, 1505959), (19, 1109654), (26, 810901), (38, 554827), (49, 430274), (67, 314678), (91, 231686), (98, 215137), (133, 158522), (134, 157339), (169, 124754), (182, 115843), (247, 85358), (266, 79261), (338, 62377), (469, 44954), (494, 42679), (637, 33098), (871, 24206), (931, 22646), (938, 22477), (1183, 17822), (1273, 16562), (1274, 16549), (1729, 12194), (1742, 12103), (1862, 11323), (2366, 8911), (2546, 8281), (3211, 6566), (3283, 6422), (3458, 6097)]