21016611

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{919}}^1$

素因数の和:957

約数の個数: 48

約数和(自身を含む): 39155200

約数和(自身を除く): 18138589

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 121, 189, 231, 297, 363, 693, 847, 919, 1089, 2079, 2541, 2757, 3267, 6433, 7623, 8271, 10109, 19299, 22869, 24813, 30327, 57897, 70763, 90981, 111199, 173691, 212289, 272943, 333597, 636867, 778393, 1000791, 1910601, 2335179, 3002373, 7005537, 21016611]

約数ペア:

[(1, 21016611), (3, 7005537), (7, 3002373), (9, 2335179), (11, 1910601), (21, 1000791), (27, 778393), (33, 636867), (63, 333597), (77, 272943), (99, 212289), (121, 173691), (189, 111199), (231, 90981), (297, 70763), (363, 57897), (693, 30327), (847, 24813), (919, 22869), (1089, 19299), (2079, 10109), (2541, 8271), (2757, 7623), (3267, 6433)]