19660400

素因数分解:

$2^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{2137}}^1$

素因数の和:2178

約数の個数: 60

約数和(自身を含む): 49310832

約数和(自身を除く): 29650432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 40, 46, 50, 80, 92, 100, 115, 184, 200, 230, 368, 400, 460, 575, 920, 1150, 1840, 2137, 2300, 4274, 4600, 8548, 9200, 10685, 17096, 21370, 34192, 42740, 49151, 53425, 85480, 98302, 106850, 170960, 196604, 213700, 245755, 393208, 427400, 491510, 786416, 854800, 983020, 1228775, 1966040, 2457550, 3932080, 4915100, 9830200, 19660400]

約数ペア:

[(1, 19660400), (2, 9830200), (4, 4915100), (5, 3932080), (8, 2457550), (10, 1966040), (16, 1228775), (20, 983020), (23, 854800), (25, 786416), (40, 491510), (46, 427400), (50, 393208), (80, 245755), (92, 213700), (100, 196604), (115, 170960), (184, 106850), (200, 98302), (230, 85480), (368, 53425), (400, 49151), (460, 42740), (575, 34192), (920, 21370), (1150, 17096), (1840, 10685), (2137, 9200), (2300, 8548), (4274, 4600)]