19172140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3881}}^1$

素因数の和:3922

約数の個数: 48

約数和(自身を含む): 45652320

約数和(自身を除く): 26480180

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 3881, 4940, 7762, 15524, 19405, 38810, 50453, 73739, 77620, 100906, 147478, 201812, 252265, 294956, 368695, 504530, 737390, 958607, 1009060, 1474780, 1917214, 3834428, 4793035, 9586070, 19172140]

約数ペア:

[(1, 19172140), (2, 9586070), (4, 4793035), (5, 3834428), (10, 1917214), (13, 1474780), (19, 1009060), (20, 958607), (26, 737390), (38, 504530), (52, 368695), (65, 294956), (76, 252265), (95, 201812), (130, 147478), (190, 100906), (247, 77620), (260, 73739), (380, 50453), (494, 38810), (988, 19405), (1235, 15524), (2470, 7762), (3881, 4940)]