21538155

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{739}}^1$

素因数の和:843

約数の個数: 32

約数和(自身を含む): 36230400

約数和(自身を除く): 14692245

約数列:

[1, 3, 5, 15, 29, 67, 87, 145, 201, 335, 435, 739, 1005, 1943, 2217, 3695, 5829, 9715, 11085, 21431, 29145, 49513, 64293, 107155, 148539, 247565, 321465, 742695, 1435877, 4307631, 7179385, 21538155]

約数ペア:

[(1, 21538155), (3, 7179385), (5, 4307631), (15, 1435877), (29, 742695), (67, 321465), (87, 247565), (145, 148539), (201, 107155), (335, 64293), (435, 49513), (739, 29145), (1005, 21431), (1943, 11085), (2217, 9715), (3695, 5829)]