21540064

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^2\times {\mathrm{569}}^1$

素因数の和:612

約数の個数: 72

約数和(自身を含む): 52572240

約数和(自身を除く): 31032176

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 169, 182, 208, 224, 338, 364, 416, 569, 676, 728, 1138, 1183, 1352, 1456, 2276, 2366, 2704, 2912, 3983, 4552, 4732, 5408, 7397, 7966, 9104, 9464, 14794, 15932, 18208, 18928, 29588, 31864, 37856, 51779, 59176, 63728, 96161, 103558, 118352, 127456, 192322, 207116, 236704, 384644, 414232, 673127, 769288, 828464, 1346254, 1538576, 1656928, 2692508, 3077152, 5385016, 10770032, 21540064]

約数ペア:

[(1, 21540064), (2, 10770032), (4, 5385016), (7, 3077152), (8, 2692508), (13, 1656928), (14, 1538576), (16, 1346254), (26, 828464), (28, 769288), (32, 673127), (52, 414232), (56, 384644), (91, 236704), (104, 207116), (112, 192322), (169, 127456), (182, 118352), (208, 103558), (224, 96161), (338, 63728), (364, 59176), (416, 51779), (569, 37856), (676, 31864), (728, 29588), (1138, 18928), (1183, 18208), (1352, 15932), (1456, 14794), (2276, 9464), (2366, 9104), (2704, 7966), (2912, 7397), (3983, 5408), (4552, 4732)]