20686788

素因数分解:

$2^2\times 3^2\times {\mathrm{401}}^1\times {\mathrm{1433}}^1$

素因数の和:1844

約数の個数: 36

約数和(自身を含む): 52458588

約数和(自身を除く): 31771800

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 401, 802, 1203, 1433, 1604, 2406, 2866, 3609, 4299, 4812, 5732, 7218, 8598, 12897, 14436, 17196, 25794, 51588, 574633, 1149266, 1723899, 2298532, 3447798, 5171697, 6895596, 10343394, 20686788]

約数ペア:

[(1, 20686788), (2, 10343394), (3, 6895596), (4, 5171697), (6, 3447798), (9, 2298532), (12, 1723899), (18, 1149266), (36, 574633), (401, 51588), (802, 25794), (1203, 17196), (1433, 14436), (1604, 12897), (2406, 8598), (2866, 7218), (3609, 5732), (4299, 4812)]