21937900

素因数分解:

$2^2\times 5^2\times {\mathrm{431}}^1\times {\mathrm{509}}^1$

素因数の和:954

約数の個数: 36

約数和(自身を含む): 47809440

約数和(自身を除く): 25871540

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 431, 509, 862, 1018, 1724, 2036, 2155, 2545, 4310, 5090, 8620, 10180, 10775, 12725, 21550, 25450, 43100, 50900, 219379, 438758, 877516, 1096895, 2193790, 4387580, 5484475, 10968950, 21937900]

約数ペア:

[(1, 21937900), (2, 10968950), (4, 5484475), (5, 4387580), (10, 2193790), (20, 1096895), (25, 877516), (50, 438758), (100, 219379), (431, 50900), (509, 43100), (862, 25450), (1018, 21550), (1724, 12725), (2036, 10775), (2155, 10180), (2545, 8620), (4310, 5090)]