18174920

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4021}}^1$

素因数の和:4145

約数の個数: 32

約数和(自身を含む): 41265720

約数和(自身を除く): 23090800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4021, 4520, 8042, 16084, 20105, 32168, 40210, 80420, 160840, 454373, 908746, 1817492, 2271865, 3634984, 4543730, 9087460, 18174920]

約数ペア:

[(1, 18174920), (2, 9087460), (4, 4543730), (5, 3634984), (8, 2271865), (10, 1817492), (20, 908746), (40, 454373), (113, 160840), (226, 80420), (452, 40210), (565, 32168), (904, 20105), (1130, 16084), (2260, 8042), (4021, 4520)]