18158777

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 23783424

約数和(自身を除く): 5624647

約数列:

[1, 7, 13, 31, 41, 91, 157, 217, 287, 403, 533, 1099, 1271, 2041, 2821, 3731, 4867, 6437, 8897, 14287, 16523, 34069, 45059, 63271, 83681, 115661, 199547, 442897, 585767, 1396829, 2594111, 18158777]

約数ペア:

[(1, 18158777), (7, 2594111), (13, 1396829), (31, 585767), (41, 442897), (91, 199547), (157, 115661), (217, 83681), (287, 63271), (403, 45059), (533, 34069), (1099, 16523), (1271, 14287), (2041, 8897), (2821, 6437), (3731, 4867)]