66864020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{419}}^1$

素因数の和:608

約数の個数: 48

約数和(自身を含む): 143942400

約数和(自身を除く): 77078380

約数列:

[1, 2, 4, 5, 10, 20, 79, 101, 158, 202, 316, 395, 404, 419, 505, 790, 838, 1010, 1580, 1676, 2020, 2095, 4190, 7979, 8380, 15958, 31916, 33101, 39895, 42319, 66202, 79790, 84638, 132404, 159580, 165505, 169276, 211595, 331010, 423190, 662020, 846380, 3343201, 6686402, 13372804, 16716005, 33432010, 66864020]

約数ペア:

[(1, 66864020), (2, 33432010), (4, 16716005), (5, 13372804), (10, 6686402), (20, 3343201), (79, 846380), (101, 662020), (158, 423190), (202, 331010), (316, 211595), (395, 169276), (404, 165505), (419, 159580), (505, 132404), (790, 84638), (838, 79790), (1010, 66202), (1580, 42319), (1676, 39895), (2020, 33101), (2095, 31916), (4190, 15958), (7979, 8380)]