21070185

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 35493120

約数和(自身を除く): 14422935

約数列:

[1, 3, 5, 15, 23, 69, 115, 157, 345, 389, 471, 785, 1167, 1945, 2355, 3611, 5835, 8947, 10833, 18055, 26841, 44735, 54165, 61073, 134205, 183219, 305365, 916095, 1404679, 4214037, 7023395, 21070185]

約数ペア:

[(1, 21070185), (3, 7023395), (5, 4214037), (15, 1404679), (23, 916095), (69, 305365), (115, 183219), (157, 134205), (345, 61073), (389, 54165), (471, 44735), (785, 26841), (1167, 18055), (1945, 10833), (2355, 8947), (3611, 5835)]