261599680

素因数分解:

$2^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:342

約数の個数: 112

約数和(自身を含む): 647248896

約数和(自身を除く): 385649216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 127, 157, 160, 164, 205, 254, 314, 320, 328, 410, 508, 628, 635, 656, 785, 820, 1016, 1256, 1270, 1312, 1570, 1640, 2032, 2512, 2540, 2624, 3140, 3280, 4064, 5024, 5080, 5207, 6280, 6437, 6560, 8128, 10048, 10160, 10414, 12560, 12874, 13120, 19939, 20320, 20828, 25120, 25748, 26035, 32185, 39878, 40640, 41656, 50240, 51496, 52070, 64370, 79756, 83312, 99695, 102992, 104140, 128740, 159512, 166624, 199390, 205984, 208280, 257480, 319024, 333248, 398780, 411968, 416560, 514960, 638048, 797560, 817499, 833120, 1029920, 1276096, 1595120, 1634998, 1666240, 2059840, 3190240, 3269996, 4087495, 6380480, 6539992, 8174990, 13079984, 16349980, 26159968, 32699960, 52319936, 65399920, 130799840, 261599680]

約数ペア:

[(1, 261599680), (2, 130799840), (4, 65399920), (5, 52319936), (8, 32699960), (10, 26159968), (16, 16349980), (20, 13079984), (32, 8174990), (40, 6539992), (41, 6380480), (64, 4087495), (80, 3269996), (82, 3190240), (127, 2059840), (157, 1666240), (160, 1634998), (164, 1595120), (205, 1276096), (254, 1029920), (314, 833120), (320, 817499), (328, 797560), (410, 638048), (508, 514960), (628, 416560), (635, 411968), (656, 398780), (785, 333248), (820, 319024), (1016, 257480), (1256, 208280), (1270, 205984), (1312, 199390), (1570, 166624), (1640, 159512), (2032, 128740), (2512, 104140), (2540, 102992), (2624, 99695), (3140, 83312), (3280, 79756), (4064, 64370), (5024, 52070), (5080, 51496), (5207, 50240), (6280, 41656), (6437, 40640), (6560, 39878), (8128, 32185), (10048, 26035), (10160, 25748), (10414, 25120), (12560, 20828), (12874, 20320), (13120, 19939)]