66436640

素因数分解:

$2^5\times 5^1\times {\mathrm{419}}^1\times {\mathrm{991}}^1$

素因数の和:1425

約数の個数: 48

約数和(自身を含む): 157489920

約数和(自身を除く): 91053280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 419, 838, 991, 1676, 1982, 2095, 3352, 3964, 4190, 4955, 6704, 7928, 8380, 9910, 13408, 15856, 16760, 19820, 31712, 33520, 39640, 67040, 79280, 158560, 415229, 830458, 1660916, 2076145, 3321832, 4152290, 6643664, 8304580, 13287328, 16609160, 33218320, 66436640]

約数ペア:

[(1, 66436640), (2, 33218320), (4, 16609160), (5, 13287328), (8, 8304580), (10, 6643664), (16, 4152290), (20, 3321832), (32, 2076145), (40, 1660916), (80, 830458), (160, 415229), (419, 158560), (838, 79280), (991, 67040), (1676, 39640), (1982, 33520), (2095, 31712), (3352, 19820), (3964, 16760), (4190, 15856), (4955, 13408), (6704, 9910), (7928, 8380)]