20904645

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1123}}^1$

素因数の和:1221

約数の個数: 32

約数和(自身を含む): 35932032

約数和(自身を除く): 15027387

約数列:

[1, 3, 5, 15, 17, 51, 73, 85, 219, 255, 365, 1095, 1123, 1241, 3369, 3723, 5615, 6205, 16845, 18615, 19091, 57273, 81979, 95455, 245937, 286365, 409895, 1229685, 1393643, 4180929, 6968215, 20904645]

約数ペア:

[(1, 20904645), (3, 6968215), (5, 4180929), (15, 1393643), (17, 1229685), (51, 409895), (73, 286365), (85, 245937), (219, 95455), (255, 81979), (365, 57273), (1095, 19091), (1123, 18615), (1241, 16845), (3369, 6205), (3723, 5615)]