21647164

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1049}}^1$

素因数の和:1138

約数の個数: 48

約数和(自身を含む): 47980800

約数和(自身を除く): 26333636

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 67, 77, 134, 154, 268, 308, 469, 737, 938, 1049, 1474, 1876, 2098, 2948, 4196, 5159, 7343, 10318, 11539, 14686, 20636, 23078, 29372, 46156, 70283, 80773, 140566, 161546, 281132, 323092, 491981, 773113, 983962, 1546226, 1967924, 3092452, 5411791, 10823582, 21647164]

約数ペア:

[(1, 21647164), (2, 10823582), (4, 5411791), (7, 3092452), (11, 1967924), (14, 1546226), (22, 983962), (28, 773113), (44, 491981), (67, 323092), (77, 281132), (134, 161546), (154, 140566), (268, 80773), (308, 70283), (469, 46156), (737, 29372), (938, 23078), (1049, 20636), (1474, 14686), (1876, 11539), (2098, 10318), (2948, 7343), (4196, 5159)]