20578514

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{607}}^1$

素因数の和:710

約数の個数: 32

約数和(自身を含む): 35721216

約数和(自身を除く): 15142702

約数列:

[1, 2, 11, 22, 23, 46, 67, 134, 253, 506, 607, 737, 1214, 1474, 1541, 3082, 6677, 13354, 13961, 16951, 27922, 33902, 40669, 81338, 153571, 307142, 447359, 894718, 935387, 1870774, 10289257, 20578514]

約数ペア:

[(1, 20578514), (2, 10289257), (11, 1870774), (22, 935387), (23, 894718), (46, 447359), (67, 307142), (134, 153571), (253, 81338), (506, 40669), (607, 33902), (737, 27922), (1214, 16951), (1474, 13961), (1541, 13354), (3082, 6677)]