20367650

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:323

約数の個数: 48

約数和(自身を含む): 40176000

約数和(自身を除く): 19808350

約数列:

[1, 2, 5, 10, 23, 25, 46, 50, 89, 115, 178, 199, 230, 398, 445, 575, 890, 995, 1150, 1990, 2047, 2225, 4094, 4450, 4577, 4975, 9154, 9950, 10235, 17711, 20470, 22885, 35422, 45770, 51175, 88555, 102350, 114425, 177110, 228850, 407353, 442775, 814706, 885550, 2036765, 4073530, 10183825, 20367650]

約数ペア:

[(1, 20367650), (2, 10183825), (5, 4073530), (10, 2036765), (23, 885550), (25, 814706), (46, 442775), (50, 407353), (89, 228850), (115, 177110), (178, 114425), (199, 102350), (230, 88555), (398, 51175), (445, 45770), (575, 35422), (890, 22885), (995, 20470), (1150, 17711), (1990, 10235), (2047, 9950), (2225, 9154), (4094, 4975), (4450, 4577)]