256259240

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{120877}}^1$

素因数の和:120941

約数の個数: 32

約数和(自身を含む): 587467080

約数和(自身を除く): 331207840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 120877, 241754, 483508, 604385, 967016, 1208770, 2417540, 4835080, 6406481, 12812962, 25625924, 32032405, 51251848, 64064810, 128129620, 256259240]

約数ペア:

[(1, 256259240), (2, 128129620), (4, 64064810), (5, 51251848), (8, 32032405), (10, 25625924), (20, 12812962), (40, 6406481), (53, 4835080), (106, 2417540), (212, 1208770), (265, 967016), (424, 604385), (530, 483508), (1060, 241754), (2120, 120877)]