85981280

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{997}}^1$

素因数の和:1037

約数の個数: 144

約数和(自身を含む): 258034896

約数和(自身を除く): 172053616

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 49, 55, 56, 70, 77, 80, 88, 98, 110, 112, 140, 154, 160, 176, 196, 220, 224, 245, 280, 308, 352, 385, 392, 440, 490, 539, 560, 616, 770, 784, 880, 980, 997, 1078, 1120, 1232, 1540, 1568, 1760, 1960, 1994, 2156, 2464, 2695, 3080, 3920, 3988, 4312, 4985, 5390, 6160, 6979, 7840, 7976, 8624, 9970, 10780, 10967, 12320, 13958, 15952, 17248, 19940, 21560, 21934, 27916, 31904, 34895, 39880, 43120, 43868, 48853, 54835, 55832, 69790, 76769, 79760, 86240, 87736, 97706, 109670, 111664, 139580, 153538, 159520, 175472, 195412, 219340, 223328, 244265, 279160, 307076, 350944, 383845, 390824, 438680, 488530, 537383, 558320, 614152, 767690, 781648, 877360, 977060, 1074766, 1116640, 1228304, 1535380, 1563296, 1754720, 1954120, 2149532, 2456608, 2686915, 3070760, 3908240, 4299064, 5373830, 6141520, 7816480, 8598128, 10747660, 12283040, 17196256, 21495320, 42990640, 85981280]

約数ペア:

[(1, 85981280), (2, 42990640), (4, 21495320), (5, 17196256), (7, 12283040), (8, 10747660), (10, 8598128), (11, 7816480), (14, 6141520), (16, 5373830), (20, 4299064), (22, 3908240), (28, 3070760), (32, 2686915), (35, 2456608), (40, 2149532), (44, 1954120), (49, 1754720), (55, 1563296), (56, 1535380), (70, 1228304), (77, 1116640), (80, 1074766), (88, 977060), (98, 877360), (110, 781648), (112, 767690), (140, 614152), (154, 558320), (160, 537383), (176, 488530), (196, 438680), (220, 390824), (224, 383845), (245, 350944), (280, 307076), (308, 279160), (352, 244265), (385, 223328), (392, 219340), (440, 195412), (490, 175472), (539, 159520), (560, 153538), (616, 139580), (770, 111664), (784, 109670), (880, 97706), (980, 87736), (997, 86240), (1078, 79760), (1120, 76769), (1232, 69790), (1540, 55832), (1568, 54835), (1760, 48853), (1960, 43868), (1994, 43120), (2156, 39880), (2464, 34895), (2695, 31904), (3080, 27916), (3920, 21934), (3988, 21560), (4312, 19940), (4985, 17248), (5390, 15952), (6160, 13958), (6979, 12320), (7840, 10967), (7976, 10780), (8624, 9970)]