20804915968

素因数分解:

$2^8\times {\mathrm{81269203}}^1$

素因数の和:81269219

約数の個数: 18

約数和(自身を含む): 41528563244

約数和(自身を除く): 20723647276

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 81269203, 162538406, 325076812, 650153624, 1300307248, 2600614496, 5201228992, 10402457984, 20804915968]

約数ペア:

[(1, 20804915968), (2, 10402457984), (4, 5201228992), (8, 2600614496), (16, 1300307248), (32, 650153624), (64, 325076812), (128, 162538406), (256, 81269203)]