20655856

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{7639}}^1$

素因数の和:7673

約数の個数: 30

約数和(自身を含む): 43341720

約数和(自身を除く): 22685864

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 7639, 15278, 30556, 61112, 99307, 122224, 198614, 397228, 794456, 1290991, 1588912, 2581982, 5163964, 10327928, 20655856]

約数ペア:

[(1, 20655856), (2, 10327928), (4, 5163964), (8, 2581982), (13, 1588912), (16, 1290991), (26, 794456), (52, 397228), (104, 198614), (169, 122224), (208, 99307), (338, 61112), (676, 30556), (1352, 15278), (2704, 7639)]