18427960

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2663}}^1$

素因数の和:2847

約数の個数: 32

約数和(自身を含む): 41718240

約数和(自身を除く): 23290280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 2663, 3460, 5326, 6920, 10652, 13315, 21304, 26630, 53260, 106520, 460699, 921398, 1842796, 2303495, 3685592, 4606990, 9213980, 18427960]

約数ペア:

[(1, 18427960), (2, 9213980), (4, 4606990), (5, 3685592), (8, 2303495), (10, 1842796), (20, 921398), (40, 460699), (173, 106520), (346, 53260), (692, 26630), (865, 21304), (1384, 13315), (1730, 10652), (2663, 6920), (3460, 5326)]