19954685

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 27060480

約数和(自身を除く): 7105795

約数列:

[1, 5, 17, 23, 59, 85, 115, 173, 295, 391, 865, 1003, 1357, 1955, 2941, 3979, 5015, 6785, 10207, 14705, 19895, 23069, 51035, 67643, 115345, 173519, 234761, 338215, 867595, 1173805, 3990937, 19954685]

約数ペア:

[(1, 19954685), (5, 3990937), (17, 1173805), (23, 867595), (59, 338215), (85, 234761), (115, 173519), (173, 115345), (295, 67643), (391, 51035), (865, 23069), (1003, 19895), (1357, 14705), (1955, 10207), (2941, 6785), (3979, 5015)]