20406904

素因数分解:

$2^3\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1187}}^1$

素因数の和:1507

約数の個数: 32

約数和(自身を含む): 43908480

約数和(自身を除く): 23501576

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 307, 614, 1187, 1228, 2149, 2374, 2456, 4298, 4748, 8309, 8596, 9496, 16618, 17192, 33236, 66472, 364409, 728818, 1457636, 2550863, 2915272, 5101726, 10203452, 20406904]

約数ペア:

[(1, 20406904), (2, 10203452), (4, 5101726), (7, 2915272), (8, 2550863), (14, 1457636), (28, 728818), (56, 364409), (307, 66472), (614, 33236), (1187, 17192), (1228, 16618), (2149, 9496), (2374, 8596), (2456, 8309), (4298, 4748)]