21638799

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8807}}^1$

素因数の和:8836

約数の個数: 32

約数和(自身を含む): 39459840

約数和(自身を除く): 17821041

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 8807, 26421, 61649, 79263, 114491, 184947, 237789, 343473, 554841, 801437, 1030419, 1664523, 2404311, 3091257, 7212933, 21638799]

約数ペア:

[(1, 21638799), (3, 7212933), (7, 3091257), (9, 2404311), (13, 1664523), (21, 1030419), (27, 801437), (39, 554841), (63, 343473), (91, 237789), (117, 184947), (189, 114491), (273, 79263), (351, 61649), (819, 26421), (2457, 8807)]