220798840

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{26161}}^1$

素因数の和:26383

約数の個数: 32

約数和(自身を含む): 499170960

約数和(自身を除く): 278372120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 26161, 52322, 104644, 130805, 209288, 261610, 523220, 1046440, 5519971, 11039942, 22079884, 27599855, 44159768, 55199710, 110399420, 220798840]

約数ペア:

[(1, 220798840), (2, 110399420), (4, 55199710), (5, 44159768), (8, 27599855), (10, 22079884), (20, 11039942), (40, 5519971), (211, 1046440), (422, 523220), (844, 261610), (1055, 209288), (1688, 130805), (2110, 104644), (4220, 52322), (8440, 26161)]