21165872

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{14537}}^1$

素因数の和:14565

約数の個数: 40

約数和(自身を含む): 50475936

約数和(自身を除く): 29310064

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 14537, 29074, 58148, 101759, 116296, 188981, 203518, 232592, 377962, 407036, 755924, 814072, 1322867, 1511848, 1628144, 2645734, 3023696, 5291468, 10582936, 21165872]

約数ペア:

[(1, 21165872), (2, 10582936), (4, 5291468), (7, 3023696), (8, 2645734), (13, 1628144), (14, 1511848), (16, 1322867), (26, 814072), (28, 755924), (52, 407036), (56, 377962), (91, 232592), (104, 203518), (112, 188981), (182, 116296), (208, 101759), (364, 58148), (728, 29074), (1456, 14537)]