21523348

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 48837600

約数和(自身を除く): 27314252

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 67, 77, 98, 134, 149, 154, 196, 268, 298, 308, 469, 539, 596, 737, 938, 1043, 1078, 1474, 1639, 1876, 2086, 2156, 2948, 3278, 3283, 4172, 5159, 6556, 6566, 7301, 9983, 10318, 11473, 13132, 14602, 19966, 20636, 22946, 29204, 36113, 39932, 45892, 69881, 72226, 80311, 109813, 139762, 144452, 160622, 219626, 279524, 321244, 439252, 489167, 768691, 978334, 1537382, 1956668, 3074764, 5380837, 10761674, 21523348]

約数ペア:

[(1, 21523348), (2, 10761674), (4, 5380837), (7, 3074764), (11, 1956668), (14, 1537382), (22, 978334), (28, 768691), (44, 489167), (49, 439252), (67, 321244), (77, 279524), (98, 219626), (134, 160622), (149, 144452), (154, 139762), (196, 109813), (268, 80311), (298, 72226), (308, 69881), (469, 45892), (539, 39932), (596, 36113), (737, 29204), (938, 22946), (1043, 20636), (1078, 19966), (1474, 14602), (1639, 13132), (1876, 11473), (2086, 10318), (2156, 9983), (2948, 7301), (3278, 6566), (3283, 6556), (4172, 5159)]