18665565

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{293}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 31159296

約数和(自身を除く): 12493731

約数列:

[1, 3, 5, 15, 31, 93, 137, 155, 293, 411, 465, 685, 879, 1465, 2055, 4247, 4395, 9083, 12741, 21235, 27249, 40141, 45415, 63705, 120423, 136245, 200705, 602115, 1244371, 3733113, 6221855, 18665565]

約数ペア:

[(1, 18665565), (3, 6221855), (5, 3733113), (15, 1244371), (31, 602115), (93, 200705), (137, 136245), (155, 120423), (293, 63705), (411, 45415), (465, 40141), (685, 27249), (879, 21235), (1465, 12741), (2055, 9083), (4247, 4395)]