128512220

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{77417}}^1$

素因数の和:77509

約数の個数: 24

約数和(自身を含む): 273130704

約数和(自身を除く): 144618484

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 77417, 154834, 309668, 387085, 774170, 1548340, 6425611, 12851222, 25702444, 32128055, 64256110, 128512220]

約数ペア:

[(1, 128512220), (2, 64256110), (4, 32128055), (5, 25702444), (10, 12851222), (20, 6425611), (83, 1548340), (166, 774170), (332, 387085), (415, 309668), (830, 154834), (1660, 77417)]