18038125

素因数分解:

$5^4\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:84

約数の個数: 60

約数和(自身を含む): 28490880

約数和(自身を除く): 10452755

約数列:

[1, 5, 7, 19, 25, 31, 35, 49, 95, 125, 133, 155, 175, 217, 245, 475, 589, 625, 665, 775, 875, 931, 1085, 1225, 1519, 2375, 2945, 3325, 3875, 4123, 4375, 4655, 5425, 6125, 7595, 11875, 14725, 16625, 19375, 20615, 23275, 27125, 28861, 30625, 37975, 73625, 83125, 103075, 116375, 135625, 144305, 189875, 368125, 515375, 581875, 721525, 949375, 2576875, 3607625, 18038125]

約数ペア:

[(1, 18038125), (5, 3607625), (7, 2576875), (19, 949375), (25, 721525), (31, 581875), (35, 515375), (49, 368125), (95, 189875), (125, 144305), (133, 135625), (155, 116375), (175, 103075), (217, 83125), (245, 73625), (475, 37975), (589, 30625), (625, 28861), (665, 27125), (775, 23275), (875, 20615), (931, 19375), (1085, 16625), (1225, 14725), (1519, 11875), (2375, 7595), (2945, 6125), (3325, 5425), (3875, 4655), (4123, 4375)]