668624593

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1\times {\mathrm{401}}^1$

素因数の和:745

約数の個数: 32

約数和(自身を含む): 839607552

約数和(自身を除く): 170982959

約数列:

[1, 7, 13, 73, 91, 251, 401, 511, 949, 1757, 2807, 3263, 5213, 6643, 18323, 22841, 29273, 36491, 100651, 128261, 204911, 238199, 380549, 704557, 1308463, 1667393, 2663843, 7347523, 9159241, 51432661, 95517799, 668624593]

約数ペア:

[(1, 668624593), (7, 95517799), (13, 51432661), (73, 9159241), (91, 7347523), (251, 2663843), (401, 1667393), (511, 1308463), (949, 704557), (1757, 380549), (2807, 238199), (3263, 204911), (5213, 128261), (6643, 100651), (18323, 36491), (22841, 29273)]