20854275

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{293}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 37768416

約数和(自身を除く): 16914141

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 73, 75, 195, 219, 293, 325, 365, 879, 949, 975, 1095, 1465, 1825, 2847, 3809, 4395, 4745, 5475, 7325, 11427, 14235, 19045, 21389, 21975, 23725, 57135, 64167, 71175, 95225, 106945, 278057, 285675, 320835, 534725, 834171, 1390285, 1604175, 4170855, 6951425, 20854275]

約数ペア:

[(1, 20854275), (3, 6951425), (5, 4170855), (13, 1604175), (15, 1390285), (25, 834171), (39, 534725), (65, 320835), (73, 285675), (75, 278057), (195, 106945), (219, 95225), (293, 71175), (325, 64167), (365, 57135), (879, 23725), (949, 21975), (975, 21389), (1095, 19045), (1465, 14235), (1825, 11427), (2847, 7325), (3809, 5475), (4395, 4745)]