19448780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:199

約数の個数: 96

約数和(自身を含む): 48168960

約数和(自身を除く): 28720180

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 31, 38, 52, 62, 65, 76, 95, 124, 127, 130, 155, 190, 247, 254, 260, 310, 380, 403, 494, 508, 589, 620, 635, 806, 988, 1178, 1235, 1270, 1612, 1651, 2015, 2356, 2413, 2470, 2540, 2945, 3302, 3937, 4030, 4826, 4940, 5890, 6604, 7657, 7874, 8060, 8255, 9652, 11780, 12065, 15314, 15748, 16510, 19685, 24130, 30628, 31369, 33020, 38285, 39370, 48260, 51181, 62738, 74803, 76570, 78740, 102362, 125476, 149606, 153140, 156845, 204724, 255905, 299212, 313690, 374015, 511810, 627380, 748030, 972439, 1023620, 1496060, 1944878, 3889756, 4862195, 9724390, 19448780]

約数ペア:

[(1, 19448780), (2, 9724390), (4, 4862195), (5, 3889756), (10, 1944878), (13, 1496060), (19, 1023620), (20, 972439), (26, 748030), (31, 627380), (38, 511810), (52, 374015), (62, 313690), (65, 299212), (76, 255905), (95, 204724), (124, 156845), (127, 153140), (130, 149606), (155, 125476), (190, 102362), (247, 78740), (254, 76570), (260, 74803), (310, 62738), (380, 51181), (403, 48260), (494, 39370), (508, 38285), (589, 33020), (620, 31369), (635, 30628), (806, 24130), (988, 19685), (1178, 16510), (1235, 15748), (1270, 15314), (1612, 12065), (1651, 11780), (2015, 9652), (2356, 8255), (2413, 8060), (2470, 7874), (2540, 7657), (2945, 6604), (3302, 5890), (3937, 4940), (4030, 4826)]