20278195

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{197}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 29766528

約数和(自身を除く): 9488333

約数列:

[1, 5, 7, 17, 35, 85, 119, 173, 197, 595, 865, 985, 1211, 1379, 2941, 3349, 6055, 6895, 14705, 16745, 20587, 23443, 34081, 102935, 117215, 170405, 238567, 579377, 1192835, 2896885, 4055639, 20278195]

約数ペア:

[(1, 20278195), (5, 4055639), (7, 2896885), (17, 1192835), (35, 579377), (85, 238567), (119, 170405), (173, 117215), (197, 102935), (595, 34081), (865, 23443), (985, 20587), (1211, 16745), (1379, 14705), (2941, 6895), (3349, 6055)]