18430820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{389}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 40884480

約数和(自身を除く): 22453660

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 103, 115, 206, 230, 389, 412, 460, 515, 778, 1030, 1556, 1945, 2060, 2369, 3890, 4738, 7780, 8947, 9476, 11845, 17894, 23690, 35788, 40067, 44735, 47380, 80134, 89470, 160268, 178940, 200335, 400670, 801340, 921541, 1843082, 3686164, 4607705, 9215410, 18430820]

約数ペア:

[(1, 18430820), (2, 9215410), (4, 4607705), (5, 3686164), (10, 1843082), (20, 921541), (23, 801340), (46, 400670), (92, 200335), (103, 178940), (115, 160268), (206, 89470), (230, 80134), (389, 47380), (412, 44735), (460, 40067), (515, 35788), (778, 23690), (1030, 17894), (1556, 11845), (1945, 9476), (2060, 8947), (2369, 7780), (3890, 4738)]