21649113

素因数分解:

$3^7\times {\mathrm{19}}^1\times {\mathrm{521}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 34243200

約数和(自身を除く): 12594087

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 521, 729, 1539, 1563, 2187, 4617, 4689, 9899, 13851, 14067, 29697, 41553, 42201, 89091, 126603, 267273, 379809, 801819, 1139427, 2405457, 7216371, 21649113]

約数ペア:

[(1, 21649113), (3, 7216371), (9, 2405457), (19, 1139427), (27, 801819), (57, 379809), (81, 267273), (171, 126603), (243, 89091), (513, 42201), (521, 41553), (729, 29697), (1539, 14067), (1563, 13851), (2187, 9899), (4617, 4689)]