13178780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{439}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 29568000

約数和(自身を除く): 16389220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 79, 95, 158, 190, 316, 380, 395, 439, 790, 878, 1501, 1580, 1756, 2195, 3002, 4390, 6004, 7505, 8341, 8780, 15010, 16682, 30020, 33364, 34681, 41705, 69362, 83410, 138724, 166820, 173405, 346810, 658939, 693620, 1317878, 2635756, 3294695, 6589390, 13178780]

約数ペア:

[(1, 13178780), (2, 6589390), (4, 3294695), (5, 2635756), (10, 1317878), (19, 693620), (20, 658939), (38, 346810), (76, 173405), (79, 166820), (95, 138724), (158, 83410), (190, 69362), (316, 41705), (380, 34681), (395, 33364), (439, 30020), (790, 16682), (878, 15010), (1501, 8780), (1580, 8341), (1756, 7505), (2195, 6004), (3002, 4390)]