20501368

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{977}}^1$

素因数の和:1087

約数の個数: 32

約数和(自身を含む): 40019760

約数和(自身を除く): 19518392

約数列:

[1, 2, 4, 8, 43, 61, 86, 122, 172, 244, 344, 488, 977, 1954, 2623, 3908, 5246, 7816, 10492, 20984, 42011, 59597, 84022, 119194, 168044, 238388, 336088, 476776, 2562671, 5125342, 10250684, 20501368]

約数ペア:

[(1, 20501368), (2, 10250684), (4, 5125342), (8, 2562671), (43, 476776), (61, 336088), (86, 238388), (122, 168044), (172, 119194), (244, 84022), (344, 59597), (488, 42011), (977, 20984), (1954, 10492), (2623, 7816), (3908, 5246)]