21678448

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{3329}}^1$

素因数の和:3385

約数の個数: 40

約数和(自身を含む): 47072880

約数和(自身を除く): 25394432

約数列:

[1, 2, 4, 8, 11, 16, 22, 37, 44, 74, 88, 148, 176, 296, 407, 592, 814, 1628, 3256, 3329, 6512, 6658, 13316, 26632, 36619, 53264, 73238, 123173, 146476, 246346, 292952, 492692, 585904, 985384, 1354903, 1970768, 2709806, 5419612, 10839224, 21678448]

約数ペア:

[(1, 21678448), (2, 10839224), (4, 5419612), (8, 2709806), (11, 1970768), (16, 1354903), (22, 985384), (37, 585904), (44, 492692), (74, 292952), (88, 246346), (148, 146476), (176, 123173), (296, 73238), (407, 53264), (592, 36619), (814, 26632), (1628, 13316), (3256, 6658), (3329, 6512)]