19971280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1877}}^1$

素因数の和:1916

約数の個数: 80

約数和(自身を含む): 55889280

約数和(自身を除く): 35918000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 380, 532, 560, 665, 760, 1064, 1330, 1520, 1877, 2128, 2660, 3754, 5320, 7508, 9385, 10640, 13139, 15016, 18770, 26278, 30032, 35663, 37540, 52556, 65695, 71326, 75080, 105112, 131390, 142652, 150160, 178315, 210224, 249641, 262780, 285304, 356630, 499282, 525560, 570608, 713260, 998564, 1051120, 1248205, 1426520, 1997128, 2496410, 2853040, 3994256, 4992820, 9985640, 19971280]

約数ペア:

[(1, 19971280), (2, 9985640), (4, 4992820), (5, 3994256), (7, 2853040), (8, 2496410), (10, 1997128), (14, 1426520), (16, 1248205), (19, 1051120), (20, 998564), (28, 713260), (35, 570608), (38, 525560), (40, 499282), (56, 356630), (70, 285304), (76, 262780), (80, 249641), (95, 210224), (112, 178315), (133, 150160), (140, 142652), (152, 131390), (190, 105112), (266, 75080), (280, 71326), (304, 65695), (380, 52556), (532, 37540), (560, 35663), (665, 30032), (760, 26278), (1064, 18770), (1330, 15016), (1520, 13139), (1877, 10640), (2128, 9385), (2660, 7508), (3754, 5320)]