20420655

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1097}}^1$

素因数の和:1195

約数の個数: 32

約数和(自身を含む): 35100864

約数和(自身を除く): 14680209

約数列:

[1, 3, 5, 15, 17, 51, 73, 85, 219, 255, 365, 1095, 1097, 1241, 3291, 3723, 5485, 6205, 16455, 18615, 18649, 55947, 80081, 93245, 240243, 279735, 400405, 1201215, 1361377, 4084131, 6806885, 20420655]

約数ペア:

[(1, 20420655), (3, 6806885), (5, 4084131), (15, 1361377), (17, 1201215), (51, 400405), (73, 279735), (85, 240243), (219, 93245), (255, 80081), (365, 55947), (1095, 18649), (1097, 18615), (1241, 16455), (3291, 6205), (3723, 5485)]