19191680

素因数分解:

$2^7\times 5^1\times {\mathrm{157}}^1\times {\mathrm{191}}^1$

素因数の和:367

約数の個数: 64

約数和(自身を含む): 46414080

約数和(自身を除く): 27222400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 191, 314, 320, 382, 628, 640, 764, 785, 955, 1256, 1528, 1570, 1910, 2512, 3056, 3140, 3820, 5024, 6112, 6280, 7640, 10048, 12224, 12560, 15280, 20096, 24448, 25120, 29987, 30560, 50240, 59974, 61120, 100480, 119948, 122240, 149935, 239896, 299870, 479792, 599740, 959584, 1199480, 1919168, 2398960, 3838336, 4797920, 9595840, 19191680]

約数ペア:

[(1, 19191680), (2, 9595840), (4, 4797920), (5, 3838336), (8, 2398960), (10, 1919168), (16, 1199480), (20, 959584), (32, 599740), (40, 479792), (64, 299870), (80, 239896), (128, 149935), (157, 122240), (160, 119948), (191, 100480), (314, 61120), (320, 59974), (382, 50240), (628, 30560), (640, 29987), (764, 25120), (785, 24448), (955, 20096), (1256, 15280), (1528, 12560), (1570, 12224), (1910, 10048), (2512, 7640), (3056, 6280), (3140, 6112), (3820, 5024)]