20818965

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4297}}^1$

素因数の和:4341

約数の個数: 32

約数和(自身を含む): 37134720

約数和(自身を除く): 16315755

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4297, 4845, 12891, 21485, 64455, 73049, 81643, 219147, 244929, 365245, 408215, 1095735, 1224645, 1387931, 4163793, 6939655, 20818965]

約数ペア:

[(1, 20818965), (3, 6939655), (5, 4163793), (15, 1387931), (17, 1224645), (19, 1095735), (51, 408215), (57, 365245), (85, 244929), (95, 219147), (255, 81643), (285, 73049), (323, 64455), (969, 21485), (1615, 12891), (4297, 4845)]