20669895

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 37964160

約数和(自身を除く): 17294265

約数列:

[1, 3, 5, 9, 15, 29, 45, 47, 87, 141, 145, 235, 261, 337, 423, 435, 705, 1011, 1305, 1363, 1685, 2115, 3033, 4089, 5055, 6815, 9773, 12267, 15165, 15839, 20445, 29319, 47517, 48865, 61335, 79195, 87957, 142551, 146595, 237585, 439785, 459331, 712755, 1377993, 2296655, 4133979, 6889965, 20669895]

約数ペア:

[(1, 20669895), (3, 6889965), (5, 4133979), (9, 2296655), (15, 1377993), (29, 712755), (45, 459331), (47, 439785), (87, 237585), (141, 146595), (145, 142551), (235, 87957), (261, 79195), (337, 61335), (423, 48865), (435, 47517), (705, 29319), (1011, 20445), (1305, 15839), (1363, 15165), (1685, 12267), (2115, 9773), (3033, 6815), (4089, 5055)]