19525240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{509}}^1$

素因数の和:664

約数の個数: 64

約数和(自身を含む): 50673600

約数和(自身を除く): 31148360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 137, 140, 274, 280, 509, 548, 685, 959, 1018, 1096, 1370, 1918, 2036, 2545, 2740, 3563, 3836, 4072, 4795, 5090, 5480, 7126, 7672, 9590, 10180, 14252, 17815, 19180, 20360, 28504, 35630, 38360, 69733, 71260, 139466, 142520, 278932, 348665, 488131, 557864, 697330, 976262, 1394660, 1952524, 2440655, 2789320, 3905048, 4881310, 9762620, 19525240]

約数ペア:

[(1, 19525240), (2, 9762620), (4, 4881310), (5, 3905048), (7, 2789320), (8, 2440655), (10, 1952524), (14, 1394660), (20, 976262), (28, 697330), (35, 557864), (40, 488131), (56, 348665), (70, 278932), (137, 142520), (140, 139466), (274, 71260), (280, 69733), (509, 38360), (548, 35630), (685, 28504), (959, 20360), (1018, 19180), (1096, 17815), (1370, 14252), (1918, 10180), (2036, 9590), (2545, 7672), (2740, 7126), (3563, 5480), (3836, 5090), (4072, 4795)]