19800286

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{359}}^1$

素因数の和:504

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 14414114

約数列:

[1, 2, 11, 22, 23, 46, 109, 218, 253, 359, 506, 718, 1199, 2398, 2507, 3949, 5014, 7898, 8257, 16514, 27577, 39131, 55154, 78262, 90827, 181654, 430441, 860882, 900013, 1800026, 9900143, 19800286]

約数ペア:

[(1, 19800286), (2, 9900143), (11, 1800026), (22, 900013), (23, 860882), (46, 430441), (109, 181654), (218, 90827), (253, 78262), (359, 55154), (506, 39131), (718, 27577), (1199, 16514), (2398, 8257), (2507, 7898), (3949, 5014)]