21609776

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{211}}^1$

素因数の和:429

約数の個数: 40

約数和(自身を含む): 43454064

約数和(自身を除く): 21844288

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 173, 211, 296, 346, 422, 592, 692, 844, 1384, 1688, 2768, 3376, 6401, 7807, 12802, 15614, 25604, 31228, 36503, 51208, 62456, 73006, 102416, 124912, 146012, 292024, 584048, 1350611, 2701222, 5402444, 10804888, 21609776]

約数ペア:

[(1, 21609776), (2, 10804888), (4, 5402444), (8, 2701222), (16, 1350611), (37, 584048), (74, 292024), (148, 146012), (173, 124912), (211, 102416), (296, 73006), (346, 62456), (422, 51208), (592, 36503), (692, 31228), (844, 25604), (1384, 15614), (1688, 12802), (2768, 7807), (3376, 6401)]