20145554416

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{863}}^1$

素因数の和:1083

約数の個数: 120

約数和(自身を含む): 43230983040

約数和(自身を除く): 23085428624

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 89, 97, 104, 169, 178, 194, 208, 338, 356, 388, 676, 712, 776, 863, 1157, 1261, 1352, 1424, 1552, 1726, 2314, 2522, 2704, 3452, 4628, 5044, 6904, 8633, 9256, 10088, 11219, 13808, 15041, 16393, 17266, 18512, 20176, 22438, 30082, 32786, 34532, 44876, 60164, 65572, 69064, 76807, 83711, 89752, 112229, 120328, 131144, 138128, 145847, 153614, 167422, 179504, 224458, 240656, 262288, 291694, 307228, 334844, 448916, 583388, 614456, 669688, 897832, 998491, 1088243, 1166776, 1228912, 1339376, 1458977, 1795664, 1996982, 2176486, 2333552, 2917954, 3993964, 4352972, 5835908, 7450279, 7987928, 8705944, 11671816, 12980383, 14147159, 14900558, 15975856, 17411888, 23343632, 25960766, 28294318, 29801116, 51921532, 56588636, 59602232, 96853627, 103843064, 113177272, 119204464, 193707254, 207686128, 226354544, 387414508, 774829016, 1259097151, 1549658032, 2518194302, 5036388604, 10072777208, 20145554416]

約数ペア:

[(1, 20145554416), (2, 10072777208), (4, 5036388604), (8, 2518194302), (13, 1549658032), (16, 1259097151), (26, 774829016), (52, 387414508), (89, 226354544), (97, 207686128), (104, 193707254), (169, 119204464), (178, 113177272), (194, 103843064), (208, 96853627), (338, 59602232), (356, 56588636), (388, 51921532), (676, 29801116), (712, 28294318), (776, 25960766), (863, 23343632), (1157, 17411888), (1261, 15975856), (1352, 14900558), (1424, 14147159), (1552, 12980383), (1726, 11671816), (2314, 8705944), (2522, 7987928), (2704, 7450279), (3452, 5835908), (4628, 4352972), (5044, 3993964), (6904, 2917954), (8633, 2333552), (9256, 2176486), (10088, 1996982), (11219, 1795664), (13808, 1458977), (15041, 1339376), (16393, 1228912), (17266, 1166776), (18512, 1088243), (20176, 998491), (22438, 897832), (30082, 669688), (32786, 614456), (34532, 583388), (44876, 448916), (60164, 334844), (65572, 307228), (69064, 291694), (76807, 262288), (83711, 240656), (89752, 224458), (112229, 179504), (120328, 167422), (131144, 153614), (138128, 145847)]