78522040

素因数分解:

$2^3\times 5^1\times {\mathrm{983}}^1\times {\mathrm{1997}}^1$

素因数の和:2991

約数の個数: 32

約数和(自身を含む): 176942880

約数和(自身を除く): 98420840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 983, 1966, 1997, 3932, 3994, 4915, 7864, 7988, 9830, 9985, 15976, 19660, 19970, 39320, 39940, 79880, 1963051, 3926102, 7852204, 9815255, 15704408, 19630510, 39261020, 78522040]

約数ペア:

[(1, 78522040), (2, 39261020), (4, 19630510), (5, 15704408), (8, 9815255), (10, 7852204), (20, 3926102), (40, 1963051), (983, 79880), (1966, 39940), (1997, 39320), (3932, 19970), (3994, 19660), (4915, 15976), (7864, 9985), (7988, 9830)]