128697320

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:522

約数の個数: 64

約数和(自身を含む): 296352000

約数和(自身を除く): 167654680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 139, 158, 278, 293, 316, 395, 556, 586, 632, 695, 790, 1112, 1172, 1390, 1465, 1580, 2344, 2780, 2930, 3160, 5560, 5860, 10981, 11720, 21962, 23147, 40727, 43924, 46294, 54905, 81454, 87848, 92588, 109810, 115735, 162908, 185176, 203635, 219620, 231470, 325816, 407270, 439240, 462940, 814540, 925880, 1629080, 3217433, 6434866, 12869732, 16087165, 25739464, 32174330, 64348660, 128697320]

約数ペア:

[(1, 128697320), (2, 64348660), (4, 32174330), (5, 25739464), (8, 16087165), (10, 12869732), (20, 6434866), (40, 3217433), (79, 1629080), (139, 925880), (158, 814540), (278, 462940), (293, 439240), (316, 407270), (395, 325816), (556, 231470), (586, 219620), (632, 203635), (695, 185176), (790, 162908), (1112, 115735), (1172, 109810), (1390, 92588), (1465, 87848), (1580, 81454), (2344, 54905), (2780, 46294), (2930, 43924), (3160, 40727), (5560, 23147), (5860, 21962), (10981, 11720)]