12381865

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 16809984

約数和(自身を除く): 4428119

約数列:

[1, 5, 17, 31, 37, 85, 127, 155, 185, 527, 629, 635, 1147, 2159, 2635, 3145, 3937, 4699, 5735, 10795, 19499, 19685, 23495, 66929, 79883, 97495, 145669, 334645, 399415, 728345, 2476373, 12381865]

約数ペア:

[(1, 12381865), (5, 2476373), (17, 728345), (31, 399415), (37, 334645), (85, 145669), (127, 97495), (155, 79883), (185, 66929), (527, 23495), (629, 19685), (635, 19499), (1147, 10795), (2159, 5735), (2635, 4699), (3145, 3937)]