21797800

素因数分解:

$2^3\times 5^2\times {\mathrm{73}}^1\times {\mathrm{1493}}^1$

素因数の和:1582

約数の個数: 48

約数和(自身を含む): 51408540

約数和(自身を除く): 29610740

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 73, 100, 146, 200, 292, 365, 584, 730, 1460, 1493, 1825, 2920, 2986, 3650, 5972, 7300, 7465, 11944, 14600, 14930, 29860, 37325, 59720, 74650, 108989, 149300, 217978, 298600, 435956, 544945, 871912, 1089890, 2179780, 2724725, 4359560, 5449450, 10898900, 21797800]

約数ペア:

[(1, 21797800), (2, 10898900), (4, 5449450), (5, 4359560), (8, 2724725), (10, 2179780), (20, 1089890), (25, 871912), (40, 544945), (50, 435956), (73, 298600), (100, 217978), (146, 149300), (200, 108989), (292, 74650), (365, 59720), (584, 37325), (730, 29860), (1460, 14930), (1493, 14600), (1825, 11944), (2920, 7465), (2986, 7300), (3650, 5972)]