18880900

素因数分解:

$2^2\times 5^2\times {\mathrm{349}}^1\times {\mathrm{541}}^1$

素因数の和:904

約数の個数: 36

約数和(自身を含む): 41164900

約数和(自身を除く): 22284000

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 349, 541, 698, 1082, 1396, 1745, 2164, 2705, 3490, 5410, 6980, 8725, 10820, 13525, 17450, 27050, 34900, 54100, 188809, 377618, 755236, 944045, 1888090, 3776180, 4720225, 9440450, 18880900]

約数ペア:

[(1, 18880900), (2, 9440450), (4, 4720225), (5, 3776180), (10, 1888090), (20, 944045), (25, 755236), (50, 377618), (100, 188809), (349, 54100), (541, 34900), (698, 27050), (1082, 17450), (1396, 13525), (1745, 10820), (2164, 8725), (2705, 6980), (3490, 5410)]