215174519

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 264176640

約数和(自身を除く): 49002121

約数列:

[1, 7, 29, 41, 103, 203, 251, 287, 721, 1189, 1757, 2987, 4223, 7279, 8323, 10291, 20909, 25853, 29561, 50953, 72037, 122467, 180971, 298439, 749737, 857269, 1059973, 2089073, 5248159, 7419811, 30739217, 215174519]

約数ペア:

[(1, 215174519), (7, 30739217), (29, 7419811), (41, 5248159), (103, 2089073), (203, 1059973), (251, 857269), (287, 749737), (721, 298439), (1189, 180971), (1757, 122467), (2987, 72037), (4223, 50953), (7279, 29561), (8323, 25853), (10291, 20909)]