20181281536

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{20983}}^1$

素因数の和:21046

約数の個数: 108

約数和(自身を含む): 46086697552

約数和(自身を除く): 25905416016

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 64, 68, 104, 128, 136, 208, 221, 256, 272, 289, 416, 442, 544, 578, 832, 884, 1088, 1156, 1664, 1768, 2176, 2312, 3328, 3536, 3757, 4352, 4624, 7072, 7514, 9248, 14144, 15028, 18496, 20983, 28288, 30056, 36992, 41966, 56576, 60112, 73984, 83932, 120224, 167864, 240448, 272779, 335728, 356711, 480896, 545558, 671456, 713422, 961792, 1091116, 1342912, 1426844, 2182232, 2685824, 2853688, 4364464, 4637243, 5371648, 5707376, 6064087, 8728928, 9274486, 11414752, 12128174, 17457856, 18548972, 22829504, 24256348, 34915712, 37097944, 45659008, 48512696, 69831424, 74195888, 78833131, 91318016, 97025392, 148391776, 157666262, 194050784, 296783552, 315332524, 388101568, 593567104, 630665048, 776203136, 1187134208, 1261330096, 1552406272, 2522660192, 5045320384, 10090640768, 20181281536]

約数ペア:

[(1, 20181281536), (2, 10090640768), (4, 5045320384), (8, 2522660192), (13, 1552406272), (16, 1261330096), (17, 1187134208), (26, 776203136), (32, 630665048), (34, 593567104), (52, 388101568), (64, 315332524), (68, 296783552), (104, 194050784), (128, 157666262), (136, 148391776), (208, 97025392), (221, 91318016), (256, 78833131), (272, 74195888), (289, 69831424), (416, 48512696), (442, 45659008), (544, 37097944), (578, 34915712), (832, 24256348), (884, 22829504), (1088, 18548972), (1156, 17457856), (1664, 12128174), (1768, 11414752), (2176, 9274486), (2312, 8728928), (3328, 6064087), (3536, 5707376), (3757, 5371648), (4352, 4637243), (4624, 4364464), (7072, 2853688), (7514, 2685824), (9248, 2182232), (14144, 1426844), (15028, 1342912), (18496, 1091116), (20983, 961792), (28288, 713422), (30056, 671456), (36992, 545558), (41966, 480896), (56576, 356711), (60112, 335728), (73984, 272779), (83932, 240448), (120224, 167864)]