21196908

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{8293}}^1$

素因数の和:8374

約数の個数: 36

約数和(自身を含む): 54342288

約数和(自身を除く): 33145380

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556, 8293, 16586, 24879, 33172, 49758, 74637, 99516, 149274, 298548, 588803, 1177606, 1766409, 2355212, 3532818, 5299227, 7065636, 10598454, 21196908]

約数ペア:

[(1, 21196908), (2, 10598454), (3, 7065636), (4, 5299227), (6, 3532818), (9, 2355212), (12, 1766409), (18, 1177606), (36, 588803), (71, 298548), (142, 149274), (213, 99516), (284, 74637), (426, 49758), (639, 33172), (852, 24879), (1278, 16586), (2556, 8293)]