638805979

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1741}}^1$

素因数の和:1867

約数の個数: 32

約数和(自身を含む): 794686464

約数和(自身を除く): 155880485

約数列:

[1, 7, 23, 43, 53, 161, 301, 371, 989, 1219, 1741, 2279, 6923, 8533, 12187, 15953, 40043, 52417, 74863, 92273, 280301, 366919, 524041, 645911, 1721849, 2122279, 3967739, 12052943, 14855953, 27774173, 91257997, 638805979]

約数ペア:

[(1, 638805979), (7, 91257997), (23, 27774173), (43, 14855953), (53, 12052943), (161, 3967739), (301, 2122279), (371, 1721849), (989, 645911), (1219, 524041), (1741, 366919), (2279, 280301), (6923, 92273), (8533, 74863), (12187, 52417), (15953, 40043)]