21180496688

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1\times {\mathrm{3923}}^1$

素因数の和:4302

約数の個数: 80

約数和(自身を含む): 44816569056

約数和(自身を除く): 23636072368

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 101, 104, 202, 208, 257, 404, 514, 808, 1028, 1313, 1616, 2056, 2626, 3341, 3923, 4112, 5252, 6682, 7846, 10504, 13364, 15692, 21008, 25957, 26728, 31384, 50999, 51914, 53456, 62768, 101998, 103828, 203996, 207656, 337441, 396223, 407992, 415312, 674882, 792446, 815984, 1008211, 1349764, 1584892, 2016422, 2699528, 3169784, 4032844, 5150899, 5399056, 6339568, 8065688, 10301798, 13106743, 16131376, 20603596, 26213486, 41207192, 52426972, 82414384, 101829311, 104853944, 203658622, 209707888, 407317244, 814634488, 1323781043, 1629268976, 2647562086, 5295124172, 10590248344, 21180496688]

約数ペア:

[(1, 21180496688), (2, 10590248344), (4, 5295124172), (8, 2647562086), (13, 1629268976), (16, 1323781043), (26, 814634488), (52, 407317244), (101, 209707888), (104, 203658622), (202, 104853944), (208, 101829311), (257, 82414384), (404, 52426972), (514, 41207192), (808, 26213486), (1028, 20603596), (1313, 16131376), (1616, 13106743), (2056, 10301798), (2626, 8065688), (3341, 6339568), (3923, 5399056), (4112, 5150899), (5252, 4032844), (6682, 3169784), (7846, 2699528), (10504, 2016422), (13364, 1584892), (15692, 1349764), (21008, 1008211), (25957, 815984), (26728, 792446), (31384, 674882), (50999, 415312), (51914, 407992), (53456, 396223), (62768, 337441), (101998, 207656), (103828, 203996)]