65399920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:338

約数の個数: 80

約数和(自身を含む): 157989888

約数和(自身を除く): 92589968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 127, 157, 164, 205, 254, 314, 328, 410, 508, 628, 635, 656, 785, 820, 1016, 1256, 1270, 1570, 1640, 2032, 2512, 2540, 3140, 3280, 5080, 5207, 6280, 6437, 10160, 10414, 12560, 12874, 19939, 20828, 25748, 26035, 32185, 39878, 41656, 51496, 52070, 64370, 79756, 83312, 99695, 102992, 104140, 128740, 159512, 199390, 208280, 257480, 319024, 398780, 416560, 514960, 797560, 817499, 1595120, 1634998, 3269996, 4087495, 6539992, 8174990, 13079984, 16349980, 32699960, 65399920]

約数ペア:

[(1, 65399920), (2, 32699960), (4, 16349980), (5, 13079984), (8, 8174990), (10, 6539992), (16, 4087495), (20, 3269996), (40, 1634998), (41, 1595120), (80, 817499), (82, 797560), (127, 514960), (157, 416560), (164, 398780), (205, 319024), (254, 257480), (314, 208280), (328, 199390), (410, 159512), (508, 128740), (628, 104140), (635, 102992), (656, 99695), (785, 83312), (820, 79756), (1016, 64370), (1256, 52070), (1270, 51496), (1570, 41656), (1640, 39878), (2032, 32185), (2512, 26035), (2540, 25748), (3140, 20828), (3280, 19939), (5080, 12874), (5207, 12560), (6280, 10414), (6437, 10160)]