19809837

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 32248320

約数和(自身を除く): 12438483

約数列:

[1, 3, 9, 19, 31, 37, 57, 93, 101, 111, 171, 279, 303, 333, 589, 703, 909, 1147, 1767, 1919, 2109, 3131, 3441, 3737, 5301, 5757, 6327, 9393, 10323, 11211, 17271, 21793, 28179, 33633, 59489, 65379, 71003, 115847, 178467, 196137, 213009, 347541, 535401, 639027, 1042623, 2201093, 6603279, 19809837]

約数ペア:

[(1, 19809837), (3, 6603279), (9, 2201093), (19, 1042623), (31, 639027), (37, 535401), (57, 347541), (93, 213009), (101, 196137), (111, 178467), (171, 115847), (279, 71003), (303, 65379), (333, 59489), (589, 33633), (703, 28179), (909, 21793), (1147, 17271), (1767, 11211), (1919, 10323), (2109, 9393), (3131, 6327), (3441, 5757), (3737, 5301)]