20619990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1163}}^1$

素因数の和:1373

約数の個数: 48

約数和(自身を含む): 53930448

約数和(自身を除く): 33310458

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 197, 394, 591, 985, 1163, 1182, 1773, 1970, 2326, 2955, 3489, 3546, 5815, 5910, 6978, 8865, 10467, 11630, 17445, 17730, 20934, 34890, 52335, 104670, 229111, 458222, 687333, 1145555, 1374666, 2061999, 2291110, 3436665, 4123998, 6873330, 10309995, 20619990]

約数ペア:

[(1, 20619990), (2, 10309995), (3, 6873330), (5, 4123998), (6, 3436665), (9, 2291110), (10, 2061999), (15, 1374666), (18, 1145555), (30, 687333), (45, 458222), (90, 229111), (197, 104670), (394, 52335), (591, 34890), (985, 20934), (1163, 17730), (1182, 17445), (1773, 11630), (1970, 10467), (2326, 8865), (2955, 6978), (3489, 5910), (3546, 5815)]