639778713

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{16657}}^1$

素因数の和:16757

約数の個数: 32

約数和(自身を含む): 1023467520

約数和(自身を除く): 383688807

約数列:

[1, 3, 7, 21, 31, 59, 93, 177, 217, 413, 651, 1239, 1829, 5487, 12803, 16657, 38409, 49971, 116599, 349797, 516367, 982763, 1549101, 2948289, 3614569, 6879341, 10843707, 20638023, 30465653, 91396959, 213259571, 639778713]

約数ペア:

[(1, 639778713), (3, 213259571), (7, 91396959), (21, 30465653), (31, 20638023), (59, 10843707), (93, 6879341), (177, 3614569), (217, 2948289), (413, 1549101), (651, 982763), (1239, 516367), (1829, 349797), (5487, 116599), (12803, 49971), (16657, 38409)]