19380309

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 28976640

約数和(自身を除く): 9596331

約数列:

[1, 3, 13, 39, 47, 97, 109, 141, 291, 327, 611, 1261, 1417, 1833, 3783, 4251, 4559, 5123, 10573, 13677, 15369, 31719, 59267, 66599, 137449, 177801, 199797, 412347, 496931, 1490793, 6460103, 19380309]

約数ペア:

[(1, 19380309), (3, 6460103), (13, 1490793), (39, 496931), (47, 412347), (97, 199797), (109, 177801), (141, 137449), (291, 66599), (327, 59267), (611, 31719), (1261, 15369), (1417, 13677), (1833, 10573), (3783, 5123), (4251, 4559)]