20417313

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 32604160

約数和(自身を除く): 12186847

約数列:

[1, 3, 7, 21, 31, 79, 93, 217, 237, 397, 553, 651, 1191, 1659, 2449, 2779, 7347, 8337, 12307, 17143, 31363, 36921, 51429, 86149, 94089, 219541, 258447, 658623, 972253, 2916759, 6805771, 20417313]

約数ペア:

[(1, 20417313), (3, 6805771), (7, 2916759), (21, 972253), (31, 658623), (79, 258447), (93, 219541), (217, 94089), (237, 86149), (397, 51429), (553, 36921), (651, 31363), (1191, 17143), (1659, 12307), (2449, 8337), (2779, 7347)]