21228195

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1663}}^1$

素因数の和:1731

約数の個数: 32

約数和(自身を含む): 36421632

約数和(自身を除く): 15193437

約数列:

[1, 3, 5, 15, 23, 37, 69, 111, 115, 185, 345, 555, 851, 1663, 2553, 4255, 4989, 8315, 12765, 24945, 38249, 61531, 114747, 184593, 191245, 307655, 573735, 922965, 1415213, 4245639, 7076065, 21228195]

約数ペア:

[(1, 21228195), (3, 7076065), (5, 4245639), (15, 1415213), (23, 922965), (37, 573735), (69, 307655), (111, 191245), (115, 184593), (185, 114747), (345, 61531), (555, 38249), (851, 24945), (1663, 12765), (2553, 8315), (4255, 4989)]