20827815

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{953}}^1$

素因数の和:1039

約数の個数: 32

約数和(自身を含む): 35168256

約数和(自身を除く): 14340441

約数列:

[1, 3, 5, 15, 31, 47, 93, 141, 155, 235, 465, 705, 953, 1457, 2859, 4371, 4765, 7285, 14295, 21855, 29543, 44791, 88629, 134373, 147715, 223955, 443145, 671865, 1388521, 4165563, 6942605, 20827815]

約数ペア:

[(1, 20827815), (3, 6942605), (5, 4165563), (15, 1388521), (31, 671865), (47, 443145), (93, 223955), (141, 147715), (155, 134373), (235, 88629), (465, 44791), (705, 29543), (953, 21855), (1457, 14295), (2859, 7285), (4371, 4765)]