20806561648

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{59671}}^1$

素因数の和:59766

約数の個数: 80

約数和(自身を含む): 44987914240

約数和(自身を除く): 24181352592

約数列:

[1, 2, 4, 8, 16, 19, 31, 37, 38, 62, 74, 76, 124, 148, 152, 248, 296, 304, 496, 589, 592, 703, 1147, 1178, 1406, 2294, 2356, 2812, 4588, 4712, 5624, 9176, 9424, 11248, 18352, 21793, 43586, 59671, 87172, 119342, 174344, 238684, 348688, 477368, 954736, 1133749, 1849801, 2207827, 2267498, 3699602, 4415654, 4534996, 7399204, 8831308, 9069992, 14798408, 17662616, 18139984, 29596816, 35146219, 35325232, 41948713, 68442637, 70292438, 83897426, 136885274, 140584876, 167794852, 273770548, 281169752, 335589704, 547541096, 562339504, 671179408, 1095082192, 1300410103, 2600820206, 5201640412, 10403280824, 20806561648]

約数ペア:

[(1, 20806561648), (2, 10403280824), (4, 5201640412), (8, 2600820206), (16, 1300410103), (19, 1095082192), (31, 671179408), (37, 562339504), (38, 547541096), (62, 335589704), (74, 281169752), (76, 273770548), (124, 167794852), (148, 140584876), (152, 136885274), (248, 83897426), (296, 70292438), (304, 68442637), (496, 41948713), (589, 35325232), (592, 35146219), (703, 29596816), (1147, 18139984), (1178, 17662616), (1406, 14798408), (2294, 9069992), (2356, 8831308), (2812, 7399204), (4588, 4534996), (4712, 4415654), (5624, 3699602), (9176, 2267498), (9424, 2207827), (11248, 1849801), (18352, 1133749), (21793, 954736), (43586, 477368), (59671, 348688), (87172, 238684), (119342, 174344)]