20161286912

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{21559}}^1$

素因数の和:21869

約数の個数: 72

約数和(自身を含む): 43495747680

約数和(自身を除く): 23334460768

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 281, 416, 562, 832, 1124, 1664, 2248, 3328, 3653, 4496, 7306, 8992, 14612, 17984, 21559, 29224, 35968, 43118, 58448, 71936, 86236, 116896, 172472, 233792, 280267, 344944, 467584, 560534, 689888, 935168, 1121068, 1379776, 2242136, 2759552, 4484272, 5519104, 6058079, 8968544, 12116158, 17937088, 24232316, 35874176, 48464632, 71748352, 78755027, 96929264, 157510054, 193858528, 315020108, 387717056, 630040216, 775434112, 1260080432, 1550868224, 2520160864, 5040321728, 10080643456, 20161286912]

約数ペア:

[(1, 20161286912), (2, 10080643456), (4, 5040321728), (8, 2520160864), (13, 1550868224), (16, 1260080432), (26, 775434112), (32, 630040216), (52, 387717056), (64, 315020108), (104, 193858528), (128, 157510054), (208, 96929264), (256, 78755027), (281, 71748352), (416, 48464632), (562, 35874176), (832, 24232316), (1124, 17937088), (1664, 12116158), (2248, 8968544), (3328, 6058079), (3653, 5519104), (4496, 4484272), (7306, 2759552), (8992, 2242136), (14612, 1379776), (17984, 1121068), (21559, 935168), (29224, 689888), (35968, 560534), (43118, 467584), (58448, 344944), (71936, 280267), (86236, 233792), (116896, 172472)]