121290280

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{293}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 279417600

約数和(自身を除く): 158127320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 131, 158, 262, 293, 316, 395, 524, 586, 632, 655, 790, 1048, 1172, 1310, 1465, 1580, 2344, 2620, 2930, 3160, 5240, 5860, 10349, 11720, 20698, 23147, 38383, 41396, 46294, 51745, 76766, 82792, 92588, 103490, 115735, 153532, 185176, 191915, 206980, 231470, 307064, 383830, 413960, 462940, 767660, 925880, 1535320, 3032257, 6064514, 12129028, 15161285, 24258056, 30322570, 60645140, 121290280]

約数ペア:

[(1, 121290280), (2, 60645140), (4, 30322570), (5, 24258056), (8, 15161285), (10, 12129028), (20, 6064514), (40, 3032257), (79, 1535320), (131, 925880), (158, 767660), (262, 462940), (293, 413960), (316, 383830), (395, 307064), (524, 231470), (586, 206980), (632, 191915), (655, 185176), (790, 153532), (1048, 115735), (1172, 103490), (1310, 92588), (1465, 82792), (1580, 76766), (2344, 51745), (2620, 46294), (2930, 41396), (3160, 38383), (5240, 23147), (5860, 20698), (10349, 11720)]