21289178560

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{15461}}^1$

素因数の和:15822

約数の個数: 112

約数和(自身を含む): 54762940512

約数和(自身を除く): 33473761952

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 331, 416, 520, 662, 832, 1040, 1324, 1655, 2080, 2648, 3310, 4160, 4303, 5296, 6620, 8606, 10592, 13240, 15461, 17212, 21184, 21515, 26480, 30922, 34424, 43030, 52960, 61844, 68848, 77305, 86060, 105920, 123688, 137696, 154610, 172120, 200993, 247376, 275392, 309220, 344240, 401986, 494752, 618440, 688480, 803972, 989504, 1004965, 1236880, 1376960, 1607944, 2009930, 2473760, 3215888, 4019860, 4947520, 5117591, 6431776, 8039720, 10235182, 12863552, 16079440, 20470364, 25587955, 32158880, 40940728, 51175910, 64317760, 66528683, 81881456, 102351820, 133057366, 163762912, 204703640, 266114732, 327525824, 332643415, 409407280, 532229464, 665286830, 818814560, 1064458928, 1330573660, 1637629120, 2128917856, 2661147320, 4257835712, 5322294640, 10644589280, 21289178560]

約数ペア:

[(1, 21289178560), (2, 10644589280), (4, 5322294640), (5, 4257835712), (8, 2661147320), (10, 2128917856), (13, 1637629120), (16, 1330573660), (20, 1064458928), (26, 818814560), (32, 665286830), (40, 532229464), (52, 409407280), (64, 332643415), (65, 327525824), (80, 266114732), (104, 204703640), (130, 163762912), (160, 133057366), (208, 102351820), (260, 81881456), (320, 66528683), (331, 64317760), (416, 51175910), (520, 40940728), (662, 32158880), (832, 25587955), (1040, 20470364), (1324, 16079440), (1655, 12863552), (2080, 10235182), (2648, 8039720), (3310, 6431776), (4160, 5117591), (4303, 4947520), (5296, 4019860), (6620, 3215888), (8606, 2473760), (10592, 2009930), (13240, 1607944), (15461, 1376960), (17212, 1236880), (21184, 1004965), (21515, 989504), (26480, 803972), (30922, 688480), (34424, 618440), (43030, 494752), (52960, 401986), (61844, 344240), (68848, 309220), (77305, 275392), (86060, 247376), (105920, 200993), (123688, 172120), (137696, 154610)]