128220309

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 227066112

約数和(自身を除く): 98845803

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 83, 93, 113, 147, 217, 249, 279, 339, 441, 581, 651, 747, 791, 1017, 1519, 1743, 1953, 2373, 2573, 3503, 4067, 4557, 5229, 5537, 7119, 7719, 9379, 10509, 12201, 13671, 16611, 18011, 23157, 24521, 28137, 31527, 36603, 49833, 54033, 65653, 73563, 84411, 126077, 162099, 171647, 196959, 220689, 290749, 378231, 459571, 514941, 590877, 872247, 1134693, 1378713, 1544823, 2035243, 2616741, 4136139, 6105729, 14246701, 18317187, 42740103, 128220309]

約数ペア:

[(1, 128220309), (3, 42740103), (7, 18317187), (9, 14246701), (21, 6105729), (31, 4136139), (49, 2616741), (63, 2035243), (83, 1544823), (93, 1378713), (113, 1134693), (147, 872247), (217, 590877), (249, 514941), (279, 459571), (339, 378231), (441, 290749), (581, 220689), (651, 196959), (747, 171647), (791, 162099), (1017, 126077), (1519, 84411), (1743, 73563), (1953, 65653), (2373, 54033), (2573, 49833), (3503, 36603), (4067, 31527), (4557, 28137), (5229, 24521), (5537, 23157), (7119, 18011), (7719, 16611), (9379, 13671), (10509, 12201)]